Journal ArticleDOI
Coherent detection of interleaved trellis encoded CPFSK on shadowed mobile satellite channels
R.W. Kerr,Peter J. McLane +1 more
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TLDR
A receiver that utilizes trellis coded continuous phase frequency shift keying (CPFSK) with coherent detection and convolutional interleaving of the coded symbols for data transmission is presented.Abstract:
A receiver that utilizes trellis coded continuous phase frequency shift keying (CPFSK) with coherent detection and convolutional interleaving of the coded symbols for data transmission is presented. An earlier study considered decoding based solely on the code trellis. A new decoding algorithm that copes with the interleaving is presented and uses information from both the modulation trellis and the code trellis. The performance results are obtained by Monte Carlo simulation and are partially verified through analysis. The fading model is Rician, but the line-of-sight (LOS) component is subjected to a log-normal transformation that represents attenuations due to foliage which is referred to as shadowing. The system studied is not suitable for digital speech applications as the required interleaving depths lad to an unacceptable time delay. >read more
Citations
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Journal ArticleDOI
Performance of trellis-coded CPM with iterative demodulation and decoding
TL;DR: A coherent receiver that performs iterative demodulation and decoding is shown to provide good bit error performance and a noncoherent iterative receiver is proposed and shown to perform close to the coherent Iterative receiver.
Proceedings ArticleDOI
Performance of trellis coded CPM with iterative demodulation and decoding
TL;DR: A coherent receiver that performs iterative demodulation and decoding is shown to provide performance close to the lower bounds developed for coherent detection on the additive white Gaussian noise and flat Rayleigh fading channels.
Journal ArticleDOI
Coded Modulations for Fading Channels: An Overview
TL;DR: A brief overview of recent developments in signal design for Rayleigh fading channels is given, mainly schemes based on phase shift keying are presented and analytical performance analysis tools are given.
Journal ArticleDOI
Pilot symbol-assisted detection of CPM schemes operating in fast fading channels
Paul Ho,Jae Hyung Kim +1 more
TL;DR: The pilot symbol encoding technique required to force a M-level CPM scheme with a modulation index of p/M to return periodically to a set of known phase states, the optimal channel estimation filters, and a trellis-based precoding technique that can reduce the bit error rate in M- level CPM systems by close to 50%, are discussed.
Journal ArticleDOI
Wireless channel equalisation
TL;DR: The paper considers equalisation techniques for fading dispersive channels which include both time and frequency selectivity and brief consideration is given to the problems of blind equalisation, techniques for dealing with fast fading channels and to the problem of joint equalisation and decoding.
References
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TL;DR: An introduction into TCM is given, reasons for the development of TCM are reviewed, and examples of simple TCM schemes are discussed.
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Trellis-coded modulation with redundant signal sets Part II: State of the art
TL;DR: The effects of carrier-phase offset in carrier-modulated TCM systems are discussed, and recent advances in TCM schemes that use signal sets defined in more than two dimensions are described, and other work related to trellis-coded modulation is mentioned.
Journal ArticleDOI
A statistical model for a land mobile satellite link
TL;DR: A statistical model for a land mobile satellite link that assumes that the amplitude of the line-of-sight component under foliage attenuation (shadowing) is lognormally distributed and the received multipath interference has a Rayleigh distribution is described.