Reduced Complexity Robust Mimo Transceiver Design

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Reduced Complexity Robust MIMO Transceiver Design

Author : Boon Sim Thian
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (86 download)

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Book Synopsis Reduced Complexity Robust MIMO Transceiver Design by : Boon Sim Thian

Download or read book Reduced Complexity Robust MIMO Transceiver Design written by Boon Sim Thian and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, we design receivers and transmitters without the assumption of perfect channel state information (CSI). This is important because in practice, obtaining error-free CSI is impossible due to measurement errors, quantization errors and many other sources of errors. The main bulk of this thesis focuses on the multiple-input multiple-output (MIMO) wireless communication systems, with a chapter being dedicated to the distributed wireless communication systems (DWCS). In the study of the MIMO system, we make use of the estimated CSI and the statistics of the estimation errors to design receiver and to jointly design transmitter-receiver in order to minimize the symbol error rate (SER) performance. Our proposed receiver is known as the robust sphere decoder; it is near-optimal in the SER sense and has significantly reduced complexity when compared to the exact maximum-likelihood (ML) decoder. Our proposed joint transmitter-receiver scheme is an adaptive scheme which adapts to estimated CSI and error statistics. The proposed scheme reduces the computational complexity of decoding whilst improving the SER performance over the best decoding scheme (exact ML decoding) without transmitter CSI. In the study of the DWCS, we consider the problem of minimizing transmit power in the downlink scenario. We account for the power used in both channel estimation and data transmission, We formulate the problem and propose solution strategies for both single-user and multi-user cases. We demonstrate that the proposed schemes significantly outperform the baseline scheme of equal power allocation.

MIMO Transceiver Design Via Majorization Theory

Author : Daniel P. Palomar
Publisher : Now Publishers Inc
ISBN 13 : 1601980302
Total Pages : 236 pages
Book Rating : 4.6/5 (19 download)

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Book Synopsis MIMO Transceiver Design Via Majorization Theory by : Daniel P. Palomar

Download or read book MIMO Transceiver Design Via Majorization Theory written by Daniel P. Palomar and published by Now Publishers Inc. This book was released on 2007 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: MIMO Transceiver Design via Majorization Theory presents an up-to-date unified mathematical framework for the design of point-to-point MIMO transceivers with channel state information (CSI) at both sides of the link according to an arbitrary cost function as a measure of the system performance.

Multi-User MIMO Relay Transceiver Optimization

Author : Jiaxin Yang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Multi-User MIMO Relay Transceiver Optimization by : Jiaxin Yang

Download or read book Multi-User MIMO Relay Transceiver Optimization written by Jiaxin Yang and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Multiple-input multiple-output (MIMO)-aided wireless relaying can improve the quality of the communication links between the source and destination nodes, hence significantly increasing system throughput, especially in multi-user networks. Relaying strategies can mainly be classified as amplify-and-forward (AF) and decode-and-forward (DF). The AF relaying technique imposes lower signal processing complexity and latency; therefore, it is preferred in many operational applications. In this regard, transceiver design becomes crucial to fully leverage the benefits of multi-user MIMO relay systems. The primary objective of this thesis is to develop new transceiver design approaches for multi-user MIMO relay networks from the perspectives of robustness, energy efficiency and secrecy. First, we propose new transceiver design approaches for a multi-user MIMO AF relay network. It is well known that the performance of wireless relaying is significantly deteriorated under realistic conditions such as imperfect channel state information (CSI) for radio links involved in the transmission. To address this issue, two popular CSI error models, namely, the statistical and norm-bounded models, are considered. Based on these models, a robust joint transceiver design framework relying on modern convex optimization theory is proposed. The resulting design algorithms lead to a relaying performance that is notably less sensitive to different types of CSI errors, as demonstrated by the simulation results. Then, we address the energy efficient design of a multi-user cooperative relay network. Assuming a flexible centralized network structure where relays can be adaptively activated/deactivated, we formulate the problem as a quality-of-service (QoS)-based network energy minimization problem that facilitates joint relay selection and transceiver optimization. An iterative solution based on re-weighted L1-norm minimization along with a block-coordinate descent (BCD)-type algorithm is proposed and its convergence properties investigated. The new algorithm is shown to provide a significantly lower energy consumption of the relay network than that required by a conventional relaying scheme. Finally, we propose a secure transceiver design approach for an MIMO relay network in the presence of multiple eavesdroppers. Under a realistic assumption of imperfect knowledge of the eavesdropper channels, we formulate the relay transceiver design as a signal-to-interference-plus-noise ratio (SINR) maximization subject to robust secrecy constraints. To solve the resulting non-convex problem, a penalized difference-of-convex (DC) algorithm is developed and its properties analyzed. Results show that the proposed algorithm can improve the secrecy of the relay-aided transmission at the physical layer." --

Probabilistic Quality-Of-Service Constrained Robust Transceiver Design in Multiple Antenna Systems

Author : Xin He
Publisher : Open Dissertation Press
ISBN 13 : 9781361279601
Total Pages : pages
Book Rating : 4.2/5 (796 download)

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Book Synopsis Probabilistic Quality-Of-Service Constrained Robust Transceiver Design in Multiple Antenna Systems by : Xin He

Download or read book Probabilistic Quality-Of-Service Constrained Robust Transceiver Design in Multiple Antenna Systems written by Xin He and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Probabilistic Quality-of-service Constrained Robust Transceiver Design in Multiple Antenna Systems" by Xin, He, 何鑫, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: In downlink multi-user multiple-input multiple-output (MU-MIMO) systems, different users, even multiple data streams serving one user, might require different quality-of-services (QoS). The transceiver should allocate resources to different users aiming at satisfying their QoS requirements. In order to design the optimal transceiver, channel state information is necessary. In practice, channel state information has to to be estimated, and estimation error is unavoidable. Therefore, robust transceiver design, which takes the channel estimation uncertainty into consideration, is important. For the previous robust transceiver designs, bounded estimation errors or Gaussian estimation errors were assumed. However, if there exists unknown distributed interference, the distribution of the channel estimation error cannot be modeled accurately a priori. Therefore, in this thesis, we investigate the robust transceiver design problem in downlink MU-MIMO system under probabilistic QoS constraints with arbitrary distributed channel estimation error. To tackle the probabilistic QoS constraints under arbitrary distributed channel estimation error, the transceiver design problem is expressed in terms of worst-case probabilistic constraints. Two methods are then proposed to solve the worst-case problem. Firstly, the Chebyshev inequality based method is proposed. After the worst-case probabilistic constraint is approximated by the Chebyshev inequality, an iteration between two convex subproblems is proposed to solve the approximated problem. The convergence of the iterative method is proved, the implementation issues and the computational complexity are discussed. Secondly, in order to solve the worst-case probabilistic constraint more accurately, a novel duality method is proposed. After a series of reformulations based on duality and S-Lemma, the worst-case statistically constrained problem is transformed into a deterministic finite constrained problem, with strong duality guaranteed. The resulting problem is then solved by a convergence-guaranteed iteration between two subproblems. Although one of the subproblems is still nonconvex, it can be solved by a tight semidefinite relaxation (SDR). Simulation results show that, compared to the non-robust method, the QoS requirement is satisfied by both proposed algorithms. Furthermore, among the two proposed methods, the duality method shows a superior performance in transmit power, while the Chebyshev method demonstrates a lower computational complexity. DOI: 10.5353/th_b4819952 Subjects: MIMO systems - Mathematical models Radio - Transmitter-receivers - Design and construction Probabilities

Low Complexity MIMO Receivers

Author : Lin Bai
Publisher : Springer Science & Business Media
ISBN 13 : 3319049844
Total Pages : 313 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Low Complexity MIMO Receivers by : Lin Bai

Download or read book Low Complexity MIMO Receivers written by Lin Bai and published by Springer Science & Business Media. This book was released on 2014-03-13 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple-input multiple-output (MIMO) systems can increase the spectral efficiency in wireless communications. However, the interference becomes the major drawback that leads to high computational complexity at both transmitter and receiver. In particular, the complexity of MIMO receivers can be prohibitively high. As an efficient mathematical tool to devise low complexity approaches that mitigate the interference in MIMO systems, lattice reduction (LR) has been widely studied and employed over the last decade. The co-authors of this book are world's leading experts on MIMO receivers, and here they share the key findings of their research over years. They detail a range of key techniques for receiver design as multiple transmitted and received signals are available. The authors first introduce the principle of signal detection and the LR in mathematical aspects. They then move on to discuss the use of LR in low complexity MIMO receiver design with respect to different aspects, including uncoded MIMO detection, MIMO iterative receivers, receivers in multiuser scenarios, and multicell MIMO systems.

High-End Performance with Low-End Hardware

Author : Christopher Mollén
Publisher : Linköping University Electronic Press
ISBN 13 : 9176853888
Total Pages : 90 pages
Book Rating : 4.1/5 (768 download)

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Book Synopsis High-End Performance with Low-End Hardware by : Christopher Mollén

Download or read book High-End Performance with Low-End Hardware written by Christopher Mollén and published by Linköping University Electronic Press. This book was released on 2019-01-14 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Massive MIMO (multiple-input–multiple-output) is a multi-antenna technology for cellular wireless communication, where the base station uses a large number of individually controllable antennas to multiplex users spatially. This technology can provide a high spectral efficiency. One of its main challenges is the immense hardware complexity and cost of all the radio chains in the base station. To make massive MIMO commercially viable, inexpensive, low-complexity hardware with low linearity has to be used, which inherently leads to more signal distortion. This thesis investigates how the degenerated linearity of some of the main components—power amplifiers, analog-to-digital converters (ADCs) and low-noise amplifiers—affects the performance of the system, with respect to data rate, power consumption and out-of-band radiation. The main results are: Spatial processing can reduce PAR (peak-to-average ratio) of the transmit signals in the downlink to as low as 0B; this, however, does not necessarily reduce power consumption. In environments with isotropic fading, one-bit ADCs lead to a reduction in effective signal-to-interference-and-noise ratio (SINR) of 4dB in the uplink and four-bit ADCs give a performance close to that of an unquantized system. An analytical expression for the radiation pattern of the distortion from nonlinear power amplifiers is derived. It shows how the distortion is beamformed to some extent, that its gain never is greater than that of the desired signal, and that the gain of the distortion is reduced with a higher number of served users and a higher number of channel taps. Nonlinear low-noise amplifiers give rise to distortion that partly combines coherently and limits the possible SINR. It is concluded that spatial processing with a large number of antennas reduces the impact of hardware distortion in most cases. As long as proper attention is paid to the few sources of coherent distortion, the hardware complexity can be reduced in massive MIMO base stations to overcome the hardware challenge and make massive MIMO commercial reality. Massiv MIMO (eng: multiple-input–multiple-output) är en flerantennsteknologi för cellulär trådlös kommunikation, där basstationen använder ett stort antal individuellt styrbara antenner för att multiplexa användare i rummet. Denna teknologi kan tillhandahålla en hög spektral effektivitet. En av dess främsta utmaningar är den enorma hårdvarukomplexiteten och kostnaden hos basstationens alla radiokedjor. För att massiv MIMO skall bli kommersiellt attraktivt, måste billiga, enkla hårdvarukomponenter med låg linjäritet användas, vilket oundvikligen leder till mer signaldistorsion. Denna avhandling undersöker hur den försämrade linjäriteten hos några av huvudkomponenterna – effektförstärkare, analog-digital-omvandlare (AD-omvandlare) och lågbrusförstärkare – påverkar systemets prestanda, i termer av datatakt, effektförbrukning och utombandsstrålning. Huvudresultaten är: Rumslig signalbehandling kan reducera sändsignalernas toppvärde i nerlänken ända ner till 0dB, vilket dock inte nödvändigtvis minskar effektförbrukningen. I miljöer med isotrop fädning leder enbits-AD-omvandlare till 4dB lägre signal-till-interferens-och-brus-förhållande i upplänken, och fyrabits-AD-omvandlare ger en prestanda nära den ett system utan kvantisering kan uppnå. Ett analytiskt uttryck för strålningsmönstret för distorsionen från icke-linjära effektförstärkare härleds. Det visar hur distorsionen till viss del lobformas, att dess förstärkning aldrig är starkare än förstärkningen för den önskade signalen och att distorsionens förstärkning minskar med ett högre antal betjänade användare och ett högre antal kanaltappar. Icke-linjära lågbrusförstärkare ger upphov distorsion som delvis kombinerar koherent och begränsar det möjliga signal-till-brus-och-interferens-förhållandet. Slutsatsen är att rumslig signalbehandling med ett stort antal antenner reducerar hårdvarudistorsionens inverkan i de flesta fall. Så länge som de få källorna till koherent distorsion ges tillbörlig uppmärksamhet, kan hårdvarukomplexiteten minskas i basstationer för massiv MIMO för att övervinna hårdvaruutmaningen och göra massiv MIMO kommersiell verklighet. ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????——???????????????——?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

Analysis and Transceiver Design for the MIMO Broadcast Channel

Author : Raphael Hunger
Publisher : Springer Science & Business Media
ISBN 13 : 3642316921
Total Pages : 323 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Analysis and Transceiver Design for the MIMO Broadcast Channel by : Raphael Hunger

Download or read book Analysis and Transceiver Design for the MIMO Broadcast Channel written by Raphael Hunger and published by Springer Science & Business Media. This book was released on 2012-08-29 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the optimization-based joint design of the transmit and receive filters in MIMO broadcast channel in which the user terminals may be equipped with several antenna elements. Furthermore, the maximum performance of the system in the high power regime as well as the set of all feasible quality-of-service requirements is analyzed. First, a fundamental duality is derived that holds between the MIMO broadcast channel and virtual MIMO multiple access channel. This duality construct allows for the efficient solution of problems originally posed in the broadcast channel in the dual domain where a possibly hidden convexity can often be revealed. On the basis of the established duality result, the gradient-projection algorithm is introduced as a tool to solve constrained optimization problems to global optimality under certain conditions. The gradient-projection tool is then applied to solving the weighted sum rate maximization problem which is a central optimization that arises in any network utility maximization. In the high power regime, a simple characterization of the obtained performance becomes possible due to the fact that the weighted sum rate utility converges to an affine asymptote in the logarithmic power domain. We find closed form expressions for these asymptotes which allows for a quantification of the asymptotic rate loss that linear transceivers have to face with respect to dirty paper coding. In the last part, we answer the fundamental question of feasibility in quality-of-service based optimizations with inelastic traffic that features strict delay constraints. Under the assumption of linear transceivers, not every set of quality-of-service requirements might be feasible making the power minimization problem with given lower bound constraints on the rate for example infeasible in these cases. We derive a complete description of the quality-of-service feasibility region for arbitrary channel matrices.

High DMT Performance and Low Complexity Transceiver Designs for MIMO and Multiple Access Channels

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (93 download)

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Book Synopsis High DMT Performance and Low Complexity Transceiver Designs for MIMO and Multiple Access Channels by :

Download or read book High DMT Performance and Low Complexity Transceiver Designs for MIMO and Multiple Access Channels written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

RF Transceiver Design for MIMO Wireless Communications

Author : Abbas Mohammadi
Publisher : Springer Science & Business Media
ISBN 13 : 3642276350
Total Pages : 302 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis RF Transceiver Design for MIMO Wireless Communications by : Abbas Mohammadi

Download or read book RF Transceiver Design for MIMO Wireless Communications written by Abbas Mohammadi and published by Springer Science & Business Media. This book was released on 2012-02-15 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical resource offers a thorough examination of RF transceiver design for MIMO communications. Offering a practical view on MIMO wireless systems, this book extends fundamental concepts on classic wireless transceiver design techniques to MIMO transceivers. This helps reader gain a very comprehensive understanding of the subject. This in-depth volume describes many theoretical and implementation challenges on MIMO transceivers and provides the practical solutions for these issues. This comprehensive book provides thorough descriptions of MIMO theoretical concepts, MIMO single carrier and OFDM modulation, RF transceiver design concepts, power amplifier, MIMO transmitter design techniques and their RF impairments, MIMO receiver design methods, RF impairments study including nonlinearity, DC-offset, I/Q imbalance and phase noise and their compensation in OFDM and MIMO techniques. In addition, it provides the most practical techniques to realize RF front-ends in MIMO systems. This book is supported with many design equations and illustrations. The first book dedicated to RF Transceiver design for MIMO systems, this volume serves as a current, one-stop guide offering you cost-effective solutions for your challenging projects in the field.

Optimal Transceiver Design for Non-regenerative MIMO Relay Systems

Author : Chao Zhao
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (88 download)

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Book Synopsis Optimal Transceiver Design for Non-regenerative MIMO Relay Systems by : Chao Zhao

Download or read book Optimal Transceiver Design for Non-regenerative MIMO Relay Systems written by Chao Zhao and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical results demonstrate that inter-block adaptation can lead to a significant reduction in computational complexity." --

Statistical Robust Beamforming for Broadcast Channels and Applications in Satellite Communication

Author : Andreas Gründinger
Publisher : Springer Nature
ISBN 13 : 3030295788
Total Pages : 261 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Statistical Robust Beamforming for Broadcast Channels and Applications in Satellite Communication by : Andreas Gründinger

Download or read book Statistical Robust Beamforming for Broadcast Channels and Applications in Satellite Communication written by Andreas Gründinger and published by Springer Nature. This book was released on 2019-11-27 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates adaptive physical-layer beamforming and resource allocation that ensure reliable data transmission in the multi-antenna broadcast channel. The book provides an overview of robust optimization techniques and modelling approximations to deal with stochastic performance metrics. One key contribution of the book is a closed-form description of the achievable rates with unlimited transmit power for a rank-one channel error model. Additionally, the book provides a concise duality framework to transform mean square error (MSE) based beamformer designs, e.g., quality of service and balancing optimizations, into equivalent uplink filter designs. For the algorithmic solution, the book analyses the following paradigm: transmission to receivers with large MSE targets (low demands) is switched off if the transmit power is low. The book also studies chance constrained optimizations for limiting the outage probability. In this context, the book provides two novel conservative outage probability approximations, that result in convex beamformer optimizations. To compensate for the remaining inaccuracy, the book introduces a post-processing power allocation. Finally, the book applies the introduced beamformer designs for SatCom, where interference from neighboring spotbeams and channel fading are the main limitations.

Reduced-complexity RF Chain and Antenna Designs for Massive MIMO Transmitters

Author : Ferhad Kasem
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)

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Book Synopsis Reduced-complexity RF Chain and Antenna Designs for Massive MIMO Transmitters by : Ferhad Kasem

Download or read book Reduced-complexity RF Chain and Antenna Designs for Massive MIMO Transmitters written by Ferhad Kasem and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The amount of mobile data handled by wireless broadband cellular networks is increasing explosively. Multiple-input multiple-output (MIMO) systems have gained a significant importance in modern wireless communication systems. MIMO offers many dimensional advantages that can be utilized to boost capacity and coverage without utilizing more bandwidth or transmit power. The introduction of MIMO systems with large antenna arrays (also known as massive MIMO) and the use of millimeter wave (mmWave) frequency bands are considered some of the key enabling technologies in the 5th generation of cellular systems to satisfy high data rate demands. However, when it comes to hardware implementation, massive MIMO systems with a large number of antennas face some challenges. Each antenna element is driven by a dedicated RF-chain; therefore, the RF-cost increases with the number of antennas. Each RF chain in a MIMO transmitter includes a power amplifier (PA), a mixer and a digital-to-analog converter (DAC). These components are expensive and power-consuming. Consequently, the cost will increase if the number of antennas grows. Reduced-cost MIMO systems have been drawing attention lately. In this dissertation, the hardware of a reduced-complexity and cost MIMO transmitter utilizing a single RF chain is presented. The RF chain includes a linear, low-cost, and energy-efficient PA and without the need for a mixer or DAC. This MIMO transmitter can convert digital signals in the baseband to the RF domain. In this MIMO transmitter, antennas are fed by two-port networks called load modulators. Load modulators are diode-based RF circuits that generate the desired outputs. The MIMO transmitter is designed at 3 GHz. The MIMO transmitter is capable of generating 64-QAM constellations at its output ports. This MIMO transmitter is perfectly suitable to operate with current MIMO receivers.

Robust Transceiver Design and Waveform Synthesis for Wideband MIMO Radar

Author :
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (939 download)

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Book Synopsis Robust Transceiver Design and Waveform Synthesis for Wideband MIMO Radar by :

Download or read book Robust Transceiver Design and Waveform Synthesis for Wideband MIMO Radar written by and published by . This book was released on 2012 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Massive MIMO Systems

Author : Kazuki Maruta
Publisher : MDPI
ISBN 13 : 3039360167
Total Pages : 330 pages
Book Rating : 4.0/5 (393 download)

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Book Synopsis Massive MIMO Systems by : Kazuki Maruta

Download or read book Massive MIMO Systems written by Kazuki Maruta and published by MDPI. This book was released on 2020-07-03 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple-input, multiple-output (MIMO), which transmits multiple data streams via multiple antenna elements, is one of the most attractive technologies in the wireless communication field. Its extension, called ‘massive MIMO’ or ‘large-scale MIMO’, in which base station has over one hundred of the antenna elements, is now seen as a promising candidate to realize 5G and beyond, as well as 6G mobile communications. It has been the first decade since its fundamental concept emerged. This Special Issue consists of 19 papers and each of them focuses on a popular topic related to massive MIMO systems, e.g. analog/digital hybrid signal processing, antenna fabrication, and machine learning incorporation. These achievements could boost its realization and deepen the academic and industrial knowledge of this field.

MIMO Underwater Acoustic Communications for Rate Enhancement and Range Extension

Author :
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (61 download)

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Book Synopsis MIMO Underwater Acoustic Communications for Rate Enhancement and Range Extension by :

Download or read book MIMO Underwater Acoustic Communications for Rate Enhancement and Range Extension written by and published by . This book was released on 2009 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our research focuses on the horizontal underwater acoustic communications. Towards the high rate objective, we address two key issues, namely channel estimation and symbol detection. To enhance channel estimation, we propose a cyclic approach (CA) for designing training sequences and an iterative adaptive approach (IAA) for estimating the channel. We also present a minimum mean-squared error (MMSE) based symbol detector, RELAX-BLAST, which combines vertical Bell Labs Layered Space-Time (V-BLAST) algorithm and the cyclic principle of RELAX. Towards the high reliability objective, we design robust MIMO transceivers that allow for very low-complexity receiver processing while achieving superb error performance even in turbulent sea. Our unique study on the correlation between the error performance and environmental data further confirms the robustness of our designs. We also performed theoretical capacity analysis as well as practical system designs of relay-aided (RA- )UAC to augment both the reliability and transmission range.

MIMO-OFDM for LTE, WiFi and WiMAX

Author : Lajos Hanzo
Publisher : John Wiley & Sons
ISBN 13 : 0470686693
Total Pages : 708 pages
Book Rating : 4.4/5 (76 download)

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Book Synopsis MIMO-OFDM for LTE, WiFi and WiMAX by : Lajos Hanzo

Download or read book MIMO-OFDM for LTE, WiFi and WiMAX written by Lajos Hanzo and published by John Wiley & Sons. This book was released on 2010-11-01 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: MIMO-OFDM for LTE, WIFI and WIMAX: Coherent versus Non-Coherent and Cooperative Turbo-Transceivers provides an up-to-date portrayal of wireless transmission based on OFDM techniques augmented with Space-Time Block Codes (STBCs) and Spatial-Division Multiple Access (SDMA). The volume also offers an in-depth treatment of cutting-edge Cooperative Communications. This monograph collates the latest techniques in a number of specific design areas of turbo-detected MIMO-OFDM wireless systems. As a result a wide range of topical subjects are examined, including channel coding and multiuser detection (MUD), with a special emphasis on optimum maximum-likelihood (ML) MUDs, reduced-complexity genetic algorithm aided near-ML MUDs and sphere detection. The benefits of spreading codes as well as joint iterative channel and data estimation are only a few of the radical new features of the book. Also considered are the benefits of turbo and LDPC channel coding, the entire suite of known joint coding and modulation schemes, space-time coding as well as SDM/SDMA MIMOs within the context of various application examples. The book systematically converts the lessons of Shannon's information theory into design principles applicable to practical wireless systems; the depth of discussions increases towards the end of the book. Discusses many state-of-the-art topics important to today's wireless communications engineers. Includes numerous complete system design examples for the industrial practitioner. Offers a detailed portrayal of sphere detection. Based on over twenty years of research into OFDM in the context of various applications, subsequently presenting comprehensive bibliographies.

Physical Layer Security in Wireless Cooperative Networks

Author : Li Wang
Publisher : Springer
ISBN 13 : 3319618636
Total Pages : 191 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Physical Layer Security in Wireless Cooperative Networks by : Li Wang

Download or read book Physical Layer Security in Wireless Cooperative Networks written by Li Wang and published by Springer. This book was released on 2017-08-31 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview for physical layer security in wireless cooperative networks, including fundamental concepts, typical solutions, and some recent achievements. It investigates the secrecy performance with respect to time reversal transmission and multi-antenna spatial modulation techniques. Both of which are proposed as effective physical layer processing schemes in wireless multipath channel environment. Resource allocation strategies to enhance secrecy performance in D2D communications are also discussed in this book. It contributes to formulating user social behaviors and utilizing social characteristics to improve the secrecy performance in wireless cooperative networks. This book not only analyzes the secrecy enhancement with certain techniques, but also pursues to find the relationships or tradeoffs among the secrecy performance, energy consumption, channel conditions, and other essential factors in wireless communications. This book targets researchers and professionals specializing in electronic engineering, computer science,wireless communications and networks. Advanced level students in electrical engineering and computer science will also find this book useful as a secondary text.