Download or read book Selective Multistage Detection Algorithm in Flat Rayleigh Fading Channel written by Li Pan and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Application of the Chase Algorithm to Multiuser Detection written by Feng Liu and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structures for Kalman based Detection Over Rayleigh Fading Channels written by Mohammad Javad Omidi and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Channel estimation is an essential part of many adaptive detection techniques proposed for data transmission over fading channels. For the frequency selective Rayleigh fading channel an autoregressive representation is proposed based on the fading model parameters. The parameters of this representation are determined based on the fading channel characteristics, making it possible to employ the Kalman filter as the best estimator for the channel impulse response. For IS-136 formatted data transmission, the Kalman filter is employed with the Viterbi algorithm in a Per-Survivor Processing (PSP) fashion and the overall bit error rate performance is shown to be superior to that of detection techniques using the RLS and LMS estimators. To allow more than one channel estimation per symbol interval, Per-Branch Processing (PBP) method is introduced as a general case of PSP. The Kalman filter can lead to significant improvement in the receiver bit error rate performance. However, a Kalman filter is a complex algorithm and is sensitive to roundoff errors. Different implementation methods are considered for measurement update and time update equations of the Kalman filter. The unit-Lower-triangular-Diagonal Correction (LDC) algorithm is used for the time update equations, and systolic array structures are proposed for its implementation. For the overall implementation of joint data and channel estimation, parallel structures are proposed to perform both the Viterbi algorithm and channel estimation. A new approach is proposed for the implementation of the Kalman filter based on differential channel states. This leads to a robust differential Kalman filtering algorithm that can be simplified further to ease the implementation without any major loss in performance.

Download or read book A Reduced Complexity Detection Algorithm Employing Adaptive LMS Filters for CDMA MIMO Systems Using Permutation Spreading in Slowly Varying Rayleigh Fading Channels written by Jing Luo and published by . This book was released on 2009 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multiuser Detection and Channel Estimation for Flat Rayleigh Fading Code Division Multiple Access Channels written by Hsin-Yu Wu and published by . This book was released on 1996 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book IEEE International Conference on Personal Wireless Communications written by and published by . This book was released on 1997 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wireless Applications of Spread Spectrum Systems written by Sawasd Tantaratana and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1998 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: These selected readings bring together introductory and advanced papers on various wireless applications of spread spectrum technology. The papers are grouped into sections according to the application areas: spread-spectrum technology, cellular mobile systems, satellite communications, wireless local area networks, and the global positioning system (GPS).

Download or read book On the Application of Multi layered Perceptrons to Nonlinear Equalization for Frequency Selective Fading Channels and Nonlinear Prediction for Time Selective Rayleigh Fading Channels written by William Redford Kirkland and published by . This book was released on 1994 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1995 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Successive Interference Cancellation for the Forward Channel of IS 95 Code Division Multiple Access Communications written by Michael Golanbari and published by . This book was released on 1999 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On the Application of Multi layered Perceptrons to Nonlinear Equalization for Frequency Selective Fading Channels and Nonlinear Prediction for Time selective Rayleigh Fading Channels microform written by W. R. (William Redford) Kirkland and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1994 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conference Proceedings written by and published by . This book was released on 2004 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multiuser Detection for Rayleigh Fading Channels written by Zoran Zvonar and published by . This book was released on 1993 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings Exhibition future Access written by and published by . This book was released on 1997 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Reduced Complexity Detection Algorithm Employing Adaptive LMS Filters for CDMA MIMO Systems Using Permutation Spreading in Slowly Varying Rayleigh Fading Channels written by Jing Luo and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adaptive Wireless Transceivers written by Lajos Hanzo and published by Wiley-IEEE Press. This book was released on 2002-04-03 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive Wireless Transceivers provides the reader with a broad overview of near-instantaneously adaptive transceivers in the context of TDMA, CDMA and OFDM systems. The adaptive transceivers examined employ powerful turbo codecs, turbo equalisers and space-time codecs, equipping the reader with a future-proof technological road map. It demonstrates that adaptive transceivers are capable of mitigating the channel quality fluctuations of the wireless channel as a lower-complexity alternative to space-time coding. By contrast, if the higher complexity of multiple transmitters and multiple receiver-assisted systems is deemed acceptable, the advantages of adaptability erode. Provides an in-depth introduction to channel equalisers and Kalman filtering and discusses the associated complexity versus performance trade-offs Introduces wideband near-instantaneously adaptive transceivers and studies their performance both with and without turbo channel coding Describes how to optimise adaptive modulation mode switching and highlights a range of practical considerations Introduces neural network based channel equalisers and discusses Radial Basis Function (RBF) assisted equalisers embedded into adaptive modems supported by turbo channel coding and turbo channel equalisation Employs the above adaptive principles also in the context of CDMA and OFDM transceivers and discusses the pros and cons of space-time coding versus adaptive modulation Researchers, advanced students and practising development engineers working in wireless communications will all find this valuable text an informative read.

Download or read book Multiuser Detection in Fading Channels Using the EM Algorithm written by Andrew W. Eckford and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Channels shared by multiple users, such as in DS-CDMA, frequently suffer from Multiple-Access Interference (MAI), which may be mitigated through the use of multiuser detection. In previous work, the EM algorithm was used in an interference cancellation multiuser detection scheme which used soft decisions. However, this method, along with most currently available multiuser detection algorithms, assumed accurate knowledge of users' transmitted amplitudes, which is impractical for use in a fading channel. In this work, the role of soft decisions in the EM algorithm and multiuser detection is carefully examined, with emphasis on the new idea of turbo detection. Adaptations of the EM-based multiuser detector for Rayleigh and Rician fading channels are also presented, both with and without knowledge of carrier phase. Simulation results for all these methods are also presented, demonstrating that the proposed algorithms improve somewhat on existing algorithms over wide ranges of SNR.