Soft output M-algorithm equalizer and trellis-coded modulation for mobile radio communication

A reduced-complexity equalizer with soft output which combines the principle of breadth-first trellis search algorithms and maximum a posteriori equalization is derived. The algorithm is suited for long channel impulse responses. Its performance is studied on two standardized mobile radio channels.<<ETX>>

[1]  A. Baier,et al.  Performance of M-algorithm MLSE equalizers in frequency-selective fading mobile radio channels , 1989, IEEE International Conference on Communications, World Prosperity Through Communications,.

[2]  B. Goldberg.  300 kHz-30 MHz MF/HF , 1966 .

[3]  G. David Forney,et al.  Maximum-likelihood sequence estimation of digital sequences in the presence of intersymbol interference , 1972, IEEE Trans. Inf. Theory.

[4]  H. Meyr,et al.  An investigation of channel estimation and equalization techniques for moderately rapid fading HF-channels , 1991, ICC 91 International Conference on Communications Conference Record.

[5]  Wolfgang Koch,et al.  Optimum and sub-optimum detection of coded data disturbed by time-varying intersymbol interference (applicable to digital mobile radio receivers) , 1990, [Proceedings] GLOBECOM '90: IEEE Global Telecommunications Conference and Exhibition.

[6]  S. J. Simmons,et al.  Reduced-search trellis decoding of coded modulations over ISI channels , 1990, [Proceedings] GLOBECOM '90: IEEE Global Telecommunications Conference and Exhibition.

[7]  Evangelos Eleftheriou,et al.  Decoding of trellis-encoded signals in the presence of intersymbol interference and noise , 1989, IEEE Trans. Commun..

[8]  Shahid U. H. Qureshi,et al.  Reduced-state sequence estimation with set partitioning and decision feedback , 1988, IEEE Trans. Commun..

[9]  Peter Adam Hoeher.  TCM on frequency-selective fading channels: a comparison of soft-output probabilistic equalizers , 1990, [Proceedings] GLOBECOM '90: IEEE Global Telecommunications Conference and Exhibition.

[10]  P.A.M. Bune.  A low-effort DSP equalization algorithm for wideband digital TDMA mobile radio receivers , 1991, ICC 91 International Conference on Communications Conference Record.

[11]  M. V. Eyuboglu,et al.  Reduced-state sequence estimation for trellis-coded modulation on intersymbol interference channels , 1988, IEEE Global Telecommunications Conference and Exhibition. Communications for the Information Age.

[12]  John B. Anderson,et al.  Sequential Coding Algorithms: A Survey and Cost Analysis , 1984, IEEE Trans. Commun..

[13]  Anders Ahlén,et al.  The structure and design of realizable decision feedback equalizers for IIR channels with colored noise , 1990, IEEE Trans. Inf. Theory.