Download or read book Adaptive Narrow band Interface Rejection in a Ds spread Spectrum Intercept Receiver Using Transform Domain Signal Processing Techniques written by John M. Gevargiz and published by . This book was released on 1987 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wireless Communication Systems written by Xiaodong Wang and published by Prentice Hall Professional. This book was released on 2004 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless Communication Systems: Advanced Techniques for Signal Receptionoffers a unified frameworkfor understanding today's newest techniques for signal processing in communication systems - andusing them to design receivers for emerging wireless systems. Two leading researchers cover a fullrange of physical-layer issues, including multipath, dispersion, interference, dynamism, andmultiple-antenna systems. Topics include blind, group-blind, space-time, and turbo multiuserdetection; narrowband interference suppression; Monte Carlo Bayesian signal processing; fast fadingchannels; advanced signal processing in coded OFDM systems, and more.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1990 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Narrow band Interference Rejection in Spread Spectrum Using an Eigen Analysis Based Approach written by Aparna Vadhri and published by . This book was released on 1994 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Spread spectrum Receivers Using sigma Delta A D Conversion and Adaptive Narrow band Interference Rejection written by Paul A. Saldin and published by . This book was released on 1993 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1990 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.
Download or read book Suppression of Narrow band Jammers in a Direct Sequence Spread Spectrum Receiver Using LMS Adaptive Filtering Techniques written by Gary J. Saulnier and published by . This book was released on 1985 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Interference Rejection Techniques to Aid Coarse Acquisition in Direct sequence Spread spectrum written by Lynn Denise Gottesman and published by . This book was released on 1993 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detectability of Spread spectrum Signals written by Robin A. Dillard and published by Artech House Radar Library (Ha. This book was released on 1989 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: A desktop reference for designers of military communication systems using spread-spectrum techniques to achieve a low probability of intercept. Shows how to evaluate the detectability of candidate signal structures mathematically, and to select signal parameters that minimize the probability of dete
Download or read book Comparison of Time and Transform Domain Interference Mitigation Techniques written by Gary J. Saulnier and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many methods have been proposed for suppressing interference in a direct sequence spread spectrum signal, including time domain adaptive filtering and transform domain excision. This report presents Monte Carlo simulation results which directly compare the performance of predictive and two sided adaptive filters, time domain adaptive correlation, transform domain excision with modulated lapped transforms and time domain correlation, and transform domain excision with modulated lapped transforms and transform domain excision. Comparisons are made for a number of different jammers, including fixed and swept frequency (i.e. chirp) tones, narrowband Gaussian interference, and pulsed tone and narrowband Gaussian interference. The performance of all the systems is compared under identical jamming conditions. Simulations were performed using the Signal Processing WorkSystem (SPW) Prom Alta Group of Cadence Design Systems, Inc. The results indicate that the transform domain excision with the modulated lapped transform and time domain correlation may provide the best compromise in implementation complexity and performance over the range of interferers considered.
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:
Download or read book Comparison of Time and Transform Domain Interference Mitigation Techniques written by Gary J. Saulnier and published by . This book was released on 1998 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many methods have been proposed for suppressing interference in a direct sequence spread spectrum signal, including time domain adaptive filtering and transform domain excision. This report presents Monte Carlo simulation results which directly compare the performance of predictive and two sided adaptive filters, time domain adaptive correlation, transform domain excision with modulated lapped transforms and time domain correlation, and transform domain excision with modulated lapped transforms and transform domain excision. Comparisons are made for a number of different jammers, including fixed and swept frequency (i.e. chirp) tones, narrowband Gaussian interference, and pulsed tone and narrowband Gaussian interference. The performance of all the systems is compared under identical jamming conditions. Simulations were performed using the Signal Processing WorkSystem (SPW) Prom Alta Group of Cadence Design Systems, Inc. The results indicate that the transform domain excision with the modulated lapped transform and time domain correlation may provide the best compromise in implementation complexity and performance over the range of interferers considered.
Download or read book Digital Techniques for Wideband Receivers written by James Bao-yen Tsui and published by Artech House Publishers. This book was released on 1995 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the most comprehensive description available of digital processing applicable to wideband receivers, this book helps you better understand the requirements of wideband digital RF receivers, learn numerous solutions to receiver problems, and get an overview of future trends in receiver development.
Download or read book Interference Suppression for Spread Spectrum Signals Using Adaptive Beamforming and Adaptive Temporal Filter written by Wonjin Park and published by . This book was released on 1996-12-01 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interference and jamming signals are a serious concern in an operational military communication environment. This thesis examines the utility and performance of combining adaptive temporal filtering with adaptive spatial filtering (i.e. adaptive beamforming) to improve the signal-to-jammer ratio (SJR) in the presence of narrowband and wideband interference. Adaptive temporal filters are used for narrowband interference suppression while adaptive beamforming is used to suppress wideband interference signals. A procedure is presented for the design and implementation of a linear constraints minimum variance generalized sidelobe canceler (LCMV-GSC) beamformer. The adaptive beamformer processes the desired signal with unity gain while simultaneously and adaptively minimizing the output due to any undesired signal. Using the LCMV-GSC beamformer with a least mean squares (LMS) adaptive algorithm, it was shown that the tapped delay line (TDL) adaptive antenna array is more effective for the suppression of wideband jammer suppression than the linear array sensors (LAS) adaptive antenna array. Also a new technique for adaptive beamforming is presented which improves wideband interference suppression in a frequency-hopped environment. The output SJR improvement for the new technique compared to the conventional technique is as much as 15dB. Sometimes, multipath signals and jammers generated by a smart enemy are correlated with the desired signal which destroys the traditional beamformer's performance. After performing a spatial smoothing technique, adaptive beamforming can also be effective in suppressing the jamming signals that are highly correlated with the desired signal.
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1987 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
