Title :
Trellis coding techniques for mobile communications
Author :
Divsalar, D. ; Simon, M.K. ; Jedrey, T.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A criterion for designing optimum trellis codes to be used over fading channels is given. A technique is shown for reducing certain multiple trellis codes, optimally designed for the fading channel, to conventional (i.e., multiplicity one) trellis codes. The computational cutoff rate R/sub 0/ is evaluated for MPSK transmitted over fading channels. Examples of trellis codes optimally designed for the Rayleigh fading channel are given and compared with respect to R/sub 0/. Two types of modulation/demodulation techniques are considered, namely coherent (using pilot tone-aided carrier recovery) and differentially coherent with Doppler frequency correction. Simulation results are given for end-to-end performance of two trellis-coded systems.<>
Keywords :
codes; encoding; fading; military systems; mobile communication systems; phase shift keying; telecommunication channels; Doppler frequency correction; MPSK; Rayleigh; differentially coherent; fading channels; mobile communications; modulation/demodulation; optimum trellis codes; using pilot tone-aided carrier recovery; AWGN; Additive white noise; Convolutional codes; Fading; Laboratories; Mobile communication; Modulation coding; Power system reliability; Propulsion; Throughput;
Conference_Titel :
Military Communications Conference, 1988. MILCOM 88, Conference record. 21st Century Military Communications - What's Possible? 1988 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/MILCOM.1988.13459
