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Performance Of Multitone Direct Sequence Spread Spectrum In The Presence Of Narrowband And Partialband Interference
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Book Synopsis Performance of Multitone Direct Sequence Spread Spectrum in the Presence of Narrowband and Partialband Interference by : Virat Deepak
Download or read book Performance of Multitone Direct Sequence Spread Spectrum in the Presence of Narrowband and Partialband Interference written by Virat Deepak and published by . This book was released on 2002 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multi-Carrier Spread-Spectrum by : Khaled Fazel
Download or read book Multi-Carrier Spread-Spectrum written by Khaled Fazel and published by Springer Science & Business Media. This book was released on 2006-08-12 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aims to edit the ensemble of the contributions and research results in this field that have been presented during the 5th International Workshop on Multi-Carrier Spread-Spectrum (MC-SS 2005), held in Oberpfaffenhofen, Germany.
Book Synopsis Performance of Voice Communications Systems in the Presence of Spread Spectrum Interference by : Leonard Farber
Download or read book Performance of Voice Communications Systems in the Presence of Spread Spectrum Interference written by Leonard Farber and published by . This book was released on 1977 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer simulation model developed for determining the manner in which undesired spread spectrum signals affect the performance of conventional narrowband AM and FM voice communication systems is described. Direct-sequence, frequency-hopping and hybrid, frequency-hopping/direct-sequence, spread spectrum interference signals were modeled. Binary phase-shift keying and minimum-shift keying were included for the carrier modulation of the direct-sequence signals and the direct-sequence portion of the hybrid signals. In addition to the spread spectrum interference, pulsed interference and white Gaussian noise were modeled. Using articulation index as the measure of performance, comparisons are made between system performance for direct-sequence interference and white Gaussian noise. System performance for frequency-hopping or frequency-hopping/direct-sequence interference is compared with that for pulsed interference. (Author).
Book Synopsis Diversity Combining for Frequency-hop Spread-spectrum Communications with Partial-band Interference and Fading by : Catherine Marie Keller
Download or read book Diversity Combining for Frequency-hop Spread-spectrum Communications with Partial-band Interference and Fading written by Catherine Marie Keller and published by . This book was released on 1985 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents results on the evaluation of several diversity combining techniques that are suggested for frequency-hop (FH) communications with partial-band interference and fading. The analysis covers systems with M-ary orthogonal signaling and noncoherent demodulation. The partial-band interference is modeled as a Gaussian process, although some of the results also apply to general (non-Gaussian) partial-band interference. The performance measures we use to evaluate the diversity combining techniques are the narrowband interference rejection capability and the signal to noise ratio requirement over the entire range of interference duty factors. We evaluate the exact probability of error for each of the diversity combining techniques studied. The performance of the optimum combining technique for receivers with perfect side information is established. It is shown that for receivers with perfect side information, the system performance does not change significantly with the choice of the diversity combining technique. However, the same schemes that work well in receivers with perfect side information perform poorly in receivers without side information. Keywords include: Diversity combining; Frequency-hop; Spread-spectrum; Partial band interference and Fading.
Book Synopsis Narrowband Interference Suppression Techniques Using Decision Feedback Filtering in Direct Sequence Spread Spectrum Systems by : Katherine Jauregui Lovette
Download or read book Narrowband Interference Suppression Techniques Using Decision Feedback Filtering in Direct Sequence Spread Spectrum Systems written by Katherine Jauregui Lovette and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Susceptibility of Direct Sequence and Frequency Hopped Spread Spectrum to Interference by : David Purle
Download or read book The Susceptibility of Direct Sequence and Frequency Hopped Spread Spectrum to Interference written by David Purle and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spread Spectrum Systems by : Robert Clyde Dixon
Download or read book Spread Spectrum Systems written by Robert Clyde Dixon and published by Wiley-Interscience. This book was released on 1984 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Narrowband Interference Rejection Techniques in Direct Sequence Spread Spectrum Systems by : Ronald Athelstan Iltis
Download or read book Narrowband Interference Rejection Techniques in Direct Sequence Spread Spectrum Systems written by Ronald Athelstan Iltis and published by . This book was released on 1984 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Performance of Direct-sequence Spread-spectrum Multiple-access Systems Including Jamming and Partial Code Correlation Effects by : Nersi Nazari
Download or read book The Performance of Direct-sequence Spread-spectrum Multiple-access Systems Including Jamming and Partial Code Correlation Effects written by Nersi Nazari and published by . This book was released on 1987 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Multitone Direct Sequence Speread [sic] Spectrum in the Presence of Imperfect Carrier Synchronization by : Hongxiang Li
Download or read book Performance of Multitone Direct Sequence Speread [sic] Spectrum in the Presence of Imperfect Carrier Synchronization written by Hongxiang Li and published by . This book was released on 2004 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Perspectives in Spread Spectrum by : Amer A. Hassan
Download or read book Perspectives in Spread Spectrum written by Amer A. Hassan and published by Springer Science & Business Media. This book was released on 1998-08-31 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perspectives in Spread Spectrum brings together studies and recent work on six exciting topics from the spread spectrum arts. The book gives a wide, collective view of trends, ideas, and techniques in the spread spectrum discipline, due to the authors' extensive work on spread spectrum techniques and applications from different vantage points. The inexorable march of electronics towards ever faster, ever smaller, and ever more powerful electronic and optical circuitry has wrought, and will continue to enable, profound changes in the spread spectrum arts, by allowing increasingly complex signalling waveforms and statistical tests to be implemented as the theory beyond spread spectrum continues to evolve. Perspectives in Spread Spectrum is divided into six chapters. The first chapter deals with sequence spreading design. There is not a single metric for design of spreading sequences; rather, the design is ideally tailored to the specific scenario of usage. This chapter delves into recent and very promising synthesis work. The second chapter deals with OFDM techniques. As channels become wider and trans-channel fading (or jamming) becomes frequency selective across the band, OFDM techniques may provide a powerful alternative design perspective. The third chapter is a generalization of the venerable Walsh functions. A new modulation scheme, Geometric Harmonic Modulation, GHM for short, is reviewed and characterized as a form of OFDM. From GHM, a further generalization of the Walsh functions is derived for non-binary signalling. The fourth chapter is concerned with some new and exciting results regarding the follower jammer paradigm. A counter-countermeasure technique is reviewed, notable for its counterintuitive characteristic which can be understood from a simple yet elegant game framework. The fifth chapter recounts some results pertaining to random coding for an optical spread spectrum link. The technique is based on laser speckle statistics and uses a coherent array of spatial light modulators at the transmitter but allows the receiver to be realized as a spatially distributed radiometric and therefore incoherent structure. The sixth and final chapter looks at an important and interesting application of spread spectrum to accurately locate a wideband, ‘bent pipe’, satellite transponder. It is, in a strong sense, an inverted GPS technique. Perspectives in Spread Spectrum serves as an excellent reference and source of ideas for further research, and may be used as a text for advanced courses on the topic.
Book Synopsis Performance Analysis of Diversity Combining for Frequency-hop Communications Under Partial-band and Multitone Interference by : Gang Li
Download or read book Performance Analysis of Diversity Combining for Frequency-hop Communications Under Partial-band and Multitone Interference written by Gang Li and published by . This book was released on 1992 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Kalman Filtering of Narrowband Interference from Direct Sequence Spread Spectrum Communications Systems by : Brian William Kozminchuk
Download or read book Kalman Filtering of Narrowband Interference from Direct Sequence Spread Spectrum Communications Systems written by Brian William Kozminchuk and published by . This book was released on 1992 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measured Noise Performance of a Direct-Sequence Spread-Spectrum System and a Comparison of Single- Vice Dual-Channel Delay-Lock Loops by : Chris G. Bartone
Download or read book Measured Noise Performance of a Direct-Sequence Spread-Spectrum System and a Comparison of Single- Vice Dual-Channel Delay-Lock Loops written by Chris G. Bartone and published by . This book was released on 1987 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: A direct-sequence (DS) spread spectrum system which could be used by a conventional amplitude modulated (AM) radio system was designed, built and tested. A delay-lock loop was used to provide code synchronization in the receiver. The noise performance of single-channel delay-lock loop (DCDLL) with no data being transmitted. When data was transmitted a DCDLL was used and the noise performance (probability of bit error) of the DS spread spectrum system was measured. Test results indicate that SCDLL performs as well as or better than the DCDLL. The measured noise performance advantage relative to the DCDLL and that this DS spread spectrum can be used to transmit low rate digital data reliably at values of SNR much than unity. It is recommended that this DS spread spectrum system be considered by the Department of Defense to be implemented in AM radio system to provide low data rate-anti-jam-interference rejection capability.
Book Synopsis Narrowband Interference Rejection in Direct-sequence Spread-spectrum Systems Using Time Domain Adaptive Filters by : Cheryl L. Stutzmann
Download or read book Narrowband Interference Rejection in Direct-sequence Spread-spectrum Systems Using Time Domain Adaptive Filters written by Cheryl L. Stutzmann and published by . This book was released on 1998 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Narrowband and Multiple-Access Interference Suppression for Direct Sequence Spread Spectrum Communication Receivers by :
Download or read book Narrowband and Multiple-Access Interference Suppression for Direct Sequence Spread Spectrum Communication Receivers written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents research results focused on the mitigation of both narrowband and multiple access interference in direct sequence spread spectrum communication systems. Both linear and nonlinear adaptive algorithmic approaches are developed and reported. Specific attention has been paid to making the algorithmic practicable. In addition to the algorithmic development, a software simulation for a code division multiple access system is developed using a commercially available programming environment.
Book Synopsis Spread Spectrum Techniques by : Robert Clyde Dixon
Download or read book Spread Spectrum Techniques written by Robert Clyde Dixon and published by . This book was released on 1976 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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