Title :
Space-time trellis-coded transmissions with parallel sequences over time-varying channels
Author :
Jitvanichphaibool, Kommate ; Saquib, Mohammad ; Al-Dhahir, Naofal
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas, Richardson, TX, USA
Abstract :
In this letter, we investigate the performance of space-time trellis codes in a time-varying channel of a multiple-access wireless system where symbols of a user are transmitted using parallel sequences. Using rank and determinant criteria, it is shown that space-time trellis codes originally designed for quasi-static channels are efficient codes for this system as well. Simulation results demonstrate that the proposed transmission scheme can exploit spatial and temporal diversities to achieve performance gains at practical decoding complexity levels.
Keywords :
diversity reception; multi-access systems; radiocommunication; sequences; space-time codes; time-varying channels; trellis codes; multiple-access wireless system; parallel sequences; quasistatic channels; space-time trellis-coded transmissions; spatial-diversity; temporal diversity; time-varying channels; Additive noise; Channel coding; Convolutional codes; Decoding; Fading; Performance gain; Receiving antennas; Time-varying channels; Transmitters; Transmitting antennas; Parallel-sequence transmission; space-time code; temporal diversity;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2004.833792
