Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Partial Network Coding With Cooperation
Download Partial Network Coding With Cooperation full books in PDF, epub, and Kindle. Read online Partial Network Coding With Cooperation ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Partial Network Coding with Cooperation by : Panupat Poocharoen
Download or read book Partial Network Coding with Cooperation written by Panupat Poocharoen and published by LAP Lambert Academic Publishing. This book was released on 2011-12 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The imperfections of the propagation channel due to channel fading and the self-generated noise from the RF front-end of the receiver cause errors in the received signal in electronic communication systems. When network coding is applied, more errors occur because of error propagation due to the inexact decoding process. In this book, we present a system called Partial Network Coding with Cooperation (PNC-COOP) for wireless ad hoc networks. It is a system which combines opportunistic network coding with decode-and-forward cooperative diversity, in order to reduce this error propagation by trading off some transmission degrees of freedom. PNC-COOP is a decentralized, energy efficient strategy which provides a substantial benefit over opportunistic network coding when transmission power is a concern. The proposed scheme is compared with both opportunistic network coding and conventional multi-hop transmission analytically and through simulation. The effectiveness of both opportunistic network coding and PNC-COOP depends not only on the amount of network coding but also on other factors that are analyzed and discussed.
Book Synopsis Partial Network Coding with Cooperation by : Panupat Poocharoen
Download or read book Partial Network Coding with Cooperation written by Panupat Poocharoen and published by . This book was released on 2011 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: The imperfections of the propagation channel due to channel fading and the self-generated noise from the RF front-end of the receiver cause errors in the received signal in electronic communication systems. When network coding is applied, more errors occur because of error propagation due to the inexact decoding process. In this dissertation we present a system called Partial Network Coding with Cooperation (PNC-COOP) for wireless ad hoc networks. It is a system which combines opportunistic network coding with decode-and-forward cooperative diversity, in order to reduce this error propagation by trading off some transmission degrees of freedom. PNC-COOP is a decentralized, energy efficient strategy which provides a substantial benefit over opportunistic network coding when transmission power is a concern. The proposed scheme is compared with both opportunistic network coding and conventional multi-hop transmission analytically and through simulation. Using a 3-hop communication scenario, in a 16-node wireless ad hoc network, it is shown that PNC-COOP improves the BER performance by 5 dB compared to opportunistic network coding. On average, it reduces the energy used by each sender node around 10% and reduces the overall transmitted energy of the network by 3.5%. When retransmission is applied, it is shown analytically that PNC-COOP performs well at relatively low to medium SNR while the throughput is comparable to that of opportunistic network coding. The effectiveness of both opportunistic network coding and PNC-COOP depends not only on the amount of network coding but also on other factors that are analyzed and discussed in this dissertation.
Download or read book Network Coding written by Muriel Medard and published by Academic Press. This book was released on 2012 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction -- Network coding Fundamentals -- Harnessing Network Coding in Wireless Systems -- Network Coding for Content Distribution and Multimedia Streaming in Peer-to-Peer Networks -- Network Coding in the Real World -- Network Coding and User Cooperation for Streaming and Download Services in LTE Networks -- CONCERTO: Experiences with a Real-World MANET System Based on Network Coding -- Secure Network Coding: Bounds and Algorithms for Secret and Reliable Communications -- Network Coding and Data Compression -- Scaling Laws with Network Coding -- Network Coding in Disruption Tolerant Networks.
Book Synopsis Network Coding for Cooperative Multi-user Wireless Communication Systems by : Hung Nguyen
Download or read book Network Coding for Cooperative Multi-user Wireless Communication Systems written by Hung Nguyen and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cooperative Network Coding for Wireless Networks by : Hani Hasan Attar
Download or read book Cooperative Network Coding for Wireless Networks written by Hani Hasan Attar and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Distributed Coding for Wireless Cooperative Networks by : Atoosa Hatefi
Download or read book Distributed Coding for Wireless Cooperative Networks written by Atoosa Hatefi and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapid growth of wireless technologies, devices and mobile applications, the quest of high throughput and ubiquitous connectivity in wireless communications increases rapidly as well. Relaying is undoubtedly a key concept to provide coverage extension and capacity increase in wireless networks. Network coding, which allows the intermediate nodes to share their computation capabilities in addition to their resource and their power, has grabbed a significant research attention since its inception in information theory. It has become an attractive candidate to bring promising performance improvement, especially in terms of throughput, in relay-based cellular networks. Substantial research efforts are currently focused on theoretical analysis, implementation and evaluation of network coding from a physical layer perspective. The question is, what is the most efficient and practical way to use network coding in wireless relay-based networks, and whether it is beneficial to exploit the broadcast and multiple-access properties of the wireless medium to perform network coding. It is in such a context, that this thesis proceeds. In the first part of the thesis, the problem of Joint Network-Channel Coding (JNCC) for a Multiple Access Relay Channel (MARC) is investigated in the presence of multiple access interferences and for both of the relay operating modes, namely, half-duplex and full-duplex. To this end, three new classes of MARC, referred to as Half-Duplex Semi-Orthogonal MARC (HD-SOMARC), Half-Duplex Non-Orthogonal MARC (HD-NOMARC), and Full-Duplex Non-Orthogonal MARC (FD-NOMARC) have been introduced and studied. The relaying function in all of the classes is based on a Selective Decode-and-Forward (SDF) strategy, which is individually implemented for each source, i.e, the relay forwards only a deterministic function of the error-free decoded messages. For each class, an information-theoretic analysis is conducted, and practical coding and decoding techniques are proposed. The proposed coding schemes, perform very close to the outage limit for both cases of HD-SOMARC and HD-NOMARC. Besides, in the case of HD-NOMARC, the optimal allocation of the transmission time to the relay is considered. It is also verified that exploiting multiple access interferences, either partially or totally, results in considerable gains for MARC compared to the existing interference-avoiding structures, even in the case of single receive antenna. In the second part of the thesis, the network model is extended by considering multiple relays which help multiple sources to communicate with a destination. A new class of Multiple Access Multiple Relay Channel (MAMRC), referred to as Half-Duplex Semi-Orthogonal MAMRC (HD-SOMAMRC) is then proposed and analyzed from both information theoretic and code design perspective. New practical JNCC schemes are proposed, in which binary channel coding and non binary network coding are combined, and they are shown to perform very close to the outage limit. Moreover, the optimal allocation of the transmission time to the sources and relays is considered. Finally, in the third part of the thesis, different ways of implementing cooperation, including practical relaying protocols are investigated for the half-duplex MARC with semi-orthogonal transmission protocol and in the case of JNCC. The hard SDF approach is compared with two Soft Decode and Forward (SoDF) relaying functions: one based on log a posterior probability ratios (LAPPRs) and the other based on Mean Square Error (MSE) estimate. It is then shown that SDF works well in most of the configurations and just in some extreme cases, soft relaying functions (based on LAPPR or MSE estimate) can slightly outperform the hard selective one.
Book Synopsis Network Coding Based Cooperative Peer-to-peer Repair in Wireless Networks by : Yu Liu
Download or read book Network Coding Based Cooperative Peer-to-peer Repair in Wireless Networks written by Yu Liu and published by . This book was released on 2012 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cooperative Network Coding for Wireless Networks by : Hani Hassan Attar
Download or read book Cooperative Network Coding for Wireless Networks written by Hani Hassan Attar and published by . This book was released on 2011 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physical-layer Network Coding for Cooperative Wireless Networks by : Dong Fang
Download or read book Physical-layer Network Coding for Cooperative Wireless Networks written by Dong Fang and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Instantly Decodable Network Coding by : Mohammad Shahedul Karim
Download or read book Instantly Decodable Network Coding written by Mohammad Shahedul Karim and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The network coding paradigm enhances transmission efficiency by combining information flows and has drawn significant attention in information theory, networking, communications and data storage. Instantly decodable network coding (IDNC), a subclass of network coding, has demonstrated its ability to improve the quality of service of time critical applications thanks to its attractive properties, namely the throughput enhancement, delay reduction, simple XOR-based encoding and decoding, and small coefficient overhead. Nonetheless, for point to multi-point (PMP) networks, IDNC cannot guarantee the decoding of a specific new packet at individual devices in each transmission. Furthermore, for device-to-device (D2D) networks, the transmitting devices may possess only a subset of packets, which can be used to form coded packets. These challenges require the optimization of IDNC algorithms to be suitable for different application requirements and network configurations. In this thesis, we first study a scalable live video broadcast over a wireless PMP network, where the devices receive video packets from a base station. Such layered live video has a hard deadline and imposes a decoding order on the video layers. We design two prioritized IDNC algorithms that provide a high level of priority to the most important video layer before considering additional video layers in coding decisions. These prioritized algorithms are shown to increase the number of decoded video layers at the devices compared to the existing network coding schemes. We then study video distribution over a partially connected D2D network, where a group of devices cooperate with each other to recover their missing video content. We introduce a cooperation aware IDNC graph that defines all feasible coding and transmission conflictfree decisions. Using this graph, we propose an IDNC solution that avoids coding and transmission conflicts, and meets the hard deadline for high importance video packets. It is demonstrated that the proposed solution delivers an improved video quality to the devices compared to the video and cooperation oblivious coding schemes. We also consider a heterogeneous network wherein devices use two wireless interfaces to receive packets from the base station and another device concurrently. For such network, we are interested in applications with reliable in-order packet delivery requirements. We represent all feasible coding opportunities and conflict-free transmissions using a dual interface IDNC graph. We select a maximal independent set over the graph by considering dual interfaces of individual devices, in-order delivery requirements of packets and lossy channel conditions. This graph based solution is shown to reduce the in-order delivery delay compared to the existing network coding schemes. Finally, we consider a D2D network with a group of devices experiencing heterogeneous channel capacities. For such cooperative scenarios, we address the problem of minimizing the completion time required for recovering all missing packets at the devices using IDNC and physical layer rate adaptation. Our proposed IDNC algorithm balances between the adopted transmission rate and the number of targeted devices that can successfully receive the transmitted packet. We show that the proposed rate aware IDNC algorithm reduces the completion time compared to the rate oblivious coding schemes.
Book Synopsis Cooperative Detection and Network Coding in Wireless Networks by : Mohammed W. Baidas
Download or read book Cooperative Detection and Network Coding in Wireless Networks written by Mohammed W. Baidas and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wireless Cooperative Network Coding by : Rossetto
Download or read book Wireless Cooperative Network Coding written by Rossetto and published by Wiley-Blackwell. This book was released on 2013-11-29 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On the Cooperative Communication with Differential Space-Time Network Coding by : 吳思葦
Download or read book On the Cooperative Communication with Differential Space-Time Network Coding written by 吳思葦 and published by . This book was released on 2012 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Practical Network Coding Scheme Over GF (2) for Multi-user Cooperative Wireless Networks by : Peiqiang Chang
Download or read book Practical Network Coding Scheme Over GF (2) for Multi-user Cooperative Wireless Networks written by Peiqiang Chang and published by . This book was released on 2011 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Network Coding for Cooperative Data Exchange by : Shahriar Etemadi Tajbakhsh
Download or read book Network Coding for Cooperative Data Exchange written by Shahriar Etemadi Tajbakhsh and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we study cooperation between wireless devices with the goal of obtaining more efficiency in bandwidth usage, energy consumption or delay in wireless communication systems. We investigate different networking scenarios. However, all the scenarios have a common framework: we consider a set of messages and a set of clients where each client initially holds a subset of messages (or some side information about the messages) and is willing to cooperate with other clients by exchanging network coded packets to obtain its desired set of messages. The desired set of messages by each client can be any arbitrary subset of messages and possibly the entire set of messages. We refer to this family of problems as the coded cooperative data exchange (CDE) problems. Cooperation between wireless devices can be highly efficient as the short range links between devices are usually faster, cheaper and more reliable than cellular communication links. In the first scenario in this thesis, all clients are interested in the same set of messages and the network is fully connected. We find a polynomial time algorithm to obtain the optimal number of transmissions and maximize the fairness in the number of transmissions by the clients subject to optimality in the total number of transmissions. A more general scenario where clients are interested in arbitrary subsets of messages is also studied. This problem which we refer to as the cooperative index coding (CIC) is an NP-hard problem. We provide a heuristic algorithm to reduce the number of transmissions as well as an analytical approximation on the total number of transmissions required for fully connected networks. We further extend our heuristic to general wireless network topologies. Mobility of the clients is another topic of study in this thesis. Mobility changes the topology of the network over time. We use probabilistic methods to approximate the number of required transmissions in the cooperative data exchange problem by taking the dynamics of the network into account. We propose an energy efficient heuristic algorithm which is based on the idea of encouraging clients with higher connectivity degree to transmit at each time. Finally we propose a system for dissemination of delay tolerant information to a large group of wireless clients spread over a large area, such as a city. The system is highly bandwidth efficient at the service provider side as it broadcasts only a fraction of information to each sub-area (cell) and the clients exchange information while they move arbitrarily over the entire area and across the cells. Several fully distributed algorithms for scheduling transmissions with different objectives are provided and evaluated via extensive numerical experiments. This is also the first study using realistic synthetic human mobility traces in the context of network coded gossiping.
Book Synopsis Network Coding and Subspace Designs by : Marcus Greferath
Download or read book Network Coding and Subspace Designs written by Marcus Greferath and published by Springer. This book was released on 2018-01-29 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, written by experts from universities and major research laboratories, addresses the hot topic of network coding, a powerful scheme for information transmission in networks that yields near-optimal throughput. It introduces readers to this striking new approach to network coding, in which the network is not simply viewed as a mechanism for delivering packets, but rather an algebraic structure named the subspace, which these packets span. This leads to a new kind of coding theory, employing what are called subspace codes. The book presents selected, highly relevant advanced research output on: Subspace Codes and Rank Metric Codes; Finite Geometries and Subspace Designs; Application of Network Coding; Codes for Distributed Storage Systems. The outcomes reflect research conducted within the framework of the European COST Action IC1104: Random Network Coding and Designs over GF(q). Taken together, they offer communications engineers, R&D engineers, researchers and graduate students in Mathematics, Computer Science, and Electrical Engineering a comprehensive reference guide to the construction of optimal network codes, as well as efficient encoding and decoding schemes for a given network code.
Book Synopsis Cooperative Cellular Wireless Networks by : Ekram Hossain
Download or read book Cooperative Cellular Wireless Networks written by Ekram Hossain and published by Cambridge University Press. This book was released on 2011-03-10 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained guide to the state-of-the-art in cooperative communications and networking techniques for next generation cellular wireless systems, this comprehensive book provides a succinct understanding of the theory, fundamentals and techniques involved in achieving efficient cooperative wireless communications in cellular wireless networks. It consolidates the essential information, addressing both theoretical and practical aspects of cooperative communications and networking in the context of cellular design. This one-stop resource covers the basics of cooperative communications techniques for cellular systems, advanced transceiver design, relay-based cellular networks, and game-theoretic and micro-economic models for protocol design in cooperative cellular wireless networks. Details of ongoing standardization activities are also included. With contributions from experts in the field divided into five distinct sections, this easy-to-follow book delivers the background needed to develop and implement cooperative mechanisms for cellular wireless networks.
