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Book Coded Modulation Techniques for Fading Channels

Download or read book Coded Modulation Techniques for Fading Channels written by Seyed Hamidreza Jamali and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coded-Modulation Techniques for Fading Channels provides the reader with a sound background for the application of bandwidth-efficient coded-modulation techniques in fading channels. The book systematically presents recent developments in the field, which has grown rapidly in recent years, and provides a solid frame of reference for further research in this area. During the past decade there has been a proliferation of research in the area of bandwidth-efficient coded-modulation techniques. The primary advantage of these schemes over modulation schemes employing traditional error correcting codes is their ability to improve the performance of the communication system without bandwidth expansion. This property makes them a suitable choice for channels which are limited in both power and bandwidth. A typical example of such channels is a mobile satellite channel, where it is desired to accommodate a large number of users in a given bandwidth with a power which is constrained by the physical size of the satellite and by the vehicle's antenna. Coded-Modulation Techniques for Fading Channels is an excellent reference for researchers and practicing engineers, and may be used as a text for advanced courses on the subject.

Book IEEE International Symposium on Information Theory

Download or read book IEEE International Symposium on Information Theory written by and published by . This book was released on 2000 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book 2000 IEEE International Symposium on Information Theory

Download or read book 2000 IEEE International Symposium on Information Theory written by IEEE Information Theory Society and published by IEEE Standards Office. This book was released on 2000 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Concatenated Coded Modulation Scheme for Error Control

Download or read book A Concatenated Coded Modulation Scheme for Error Control written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-28 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concatenated coded modulation scheme for error control in data communications is presented. The scheme is achieved by concatenating a Reed-Solomon outer code and a bandwidth efficient block inner code for M-ary PSK modulation. Error performance of the scheme is analyzed for an AWGN channel. It is shown that extremely high reliability can be attained by using a simple M-ary PSK modulation inner code and a relatively powerful Reed-Solomon outer code. Furthermore, if an inner code of high effective rate is used, the bandwidth expansion required by the scheme due to coding will be greatly reduced. The proposed scheme is very effective for high speed satellite communications for large file transfer where high reliability is required. A simple method is also presented for constructing codes for M-ary PSK modulation. Some short M-ary PSK codes with good minimum squared Euclidean distance are constructed. These codes have trellis structure and hence can be decoded with a soft decision Viterbi decoding algorithm. Furthermore, some of these codes are phase invariant under multiples of 45 deg rotation. Lin, Shu Unspecified Center NAG5-931...

Book Performance Analysis of an Alternative to Trellis Coded Modulation for Waveforms Transmitted Over a Channel with Pulse Noise Interference

Download or read book Performance Analysis of an Alternative to Trellis Coded Modulation for Waveforms Transmitted Over a Channel with Pulse Noise Interference written by and published by . This book was released on 2008 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of a communication system having almost the same spectral efficiency as a trellis coded modulation (TCM) system with r = 2/3 convolutional encoding and 8-ary phase-shift keying (8-PSK) modulation is investigated. TCM is a common solution to the problem of adding forward error correction (FEC) coding without an attendant increase in channel bandwidth. The primary drawback to TCM is that the achievable coding gain is limited by the maximum practical number of states in the convolutional encoder. The alternative system considered uses (63, 37) Reed-Solomon (RS) encoding. The six-bit symbols at the output of the Reed-Solomon encoder undergo serial-to-parallel conversion to two three-bit symbols, which are then independently transmitted on the in-phase (I) and quadrature (Q) component of the carrier using 8-ary biorthogonal keying (8-BOK). This system has a null-to-null bandwidth of 0.993Rb, which is 0.7% smaller than TCM with r = 2/3 convolutional encoding and 8-PSK modulation. The two waveforms are compared for the relatively benign case where additive white Gaussian noise (AWGN) is the only noise present as well as when pulse-noise interference (PNI) is present. It was found that both systems have almost the same performance in AWGN, but with PNI the alternative system has better performance.

Book Development of Coded Modulation Techniques for the Mobile Radio Environment

Download or read book Development of Coded Modulation Techniques for the Mobile Radio Environment written by Reyat Yilmaz and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Introduction to Trellis coded Modulation with Applications

Download or read book Introduction to Trellis coded Modulation with Applications written by Ezio Biglieri and published by Macmillan College. This book was released on 1991 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Trellis Coded Modulation Applied to Orthogonal Signals

Download or read book Trellis Coded Modulation Applied to Orthogonal Signals written by Janet Emerson Stevens and published by . This book was released on 1993 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Coding and Capacity for Additive White Gaussian Noise Multi User Channels with Feedback

Download or read book Coding and Capacity for Additive White Gaussian Noise Multi User Channels with Feedback written by Lawrence Howard Ozarow and published by . This book was released on 1979 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deterministic coding schemes are presented for the additive white gaussian noise two user multiple access and broadcast channels with noiseless feedback. The error probabilities for these schemes approach zero at a rate which is doubly exponential in block length. Outer bounds on the capacity region are also obtained for both channels. The achievable region obtained for the multiple access channel is shown to coincide with the outer bound, yielding a solution of the capacity region for this problem. While the achievable region for the broadcast channel does not coincide with the outer bound, for all cases except that in which one channel is a physically degraded version of the other, the achievable region lies outside the set of rates achievable in the absence of feedback. This is the first case in which it has been demonstrated that feedback can enlarge the capacity region of broadcast channels. (Author).

Book Coding Schemes for Additive Noise Channels with Feedback

Download or read book Coding Schemes for Additive Noise Channels with Feedback written by John Pieter Marius Schalkwijk and published by . This book was released on 1965 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Iterative Decoding of Multilevel Coded Modulation

Download or read book Iterative Decoding of Multilevel Coded Modulation written by and published by . This book was released on 2011 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Error Control Coding for Multi Frequency Modulation

Download or read book Error Control Coding for Multi Frequency Modulation written by and published by . This book was released on 1990 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-frequency modulation (MFM) has been developed at NPS using both quadrature-phase-shift-keyed (QPSK) and quadrature-amplitude-modulated (QAM) signals with good bit error performance at reasonable signal-to-noise ratios. Improved performance can be achieved by the introduction of error control coding. This report documents a Fortran simulation of the implementation of error control coding into an MFM communication link with additive white Gaussian noise. Four Reed-Solomon codes were incorporated, two for 16-QAM and two for 32- QAM modulation schemes. The error control codes used were modified from the conventional Reed-Solomon codes in that one information symbol was sacrificed to parity in order to use a simplified decoding algorithm which requires no iteration and enhances error detection capability. Bit error rates as a function of SNR and Eb/N0 were analyzed, and bit error performance waa weighed against reduction in information rate to determine the value of the codes.