Title :
A multiple trellis coded Q2PSK system for wireless local loop applications
Author :
van Wyk, D.J. ; Lötter, M.P. ; Linde, L.P. ; Van Rooyen, P.G.W.
Author_Institution :
Lab. for Adv. Eng., Pretoria Univ., South Africa
Abstract :
The code design and performance evaluation of multiple trellis-coded modulation (MTCM) codes for application to a Q2PSK micro-cellular wireless local loop access system are investigated. The paper formulates extended design criteria for MTCM code design based on the analysis of burst errors. Based on this criteria, the design of new 4-state codes for Q2PSK is presented, and the bit error rate performance of these code designs, assuming coherent detection and perfect clock recovery are studied by means of simulation. It is demonstrated through computer simulation results that coding gains in excess of 13.0 dB at a bit error probability of 10-5 can be achieved with the designed MTCM coded system, relative to the uncoded system under the conditions present in a micro-cellular wireless local loop network. Furthermore, the benefits of using channel state information (CSI) in conjunction with MTCM are also considered
Keywords :
Gaussian channels; cellular radio; coding errors; error statistics; fading; probability; quadrature phase shift keying; subscriber loops; trellis coded modulation; 4-state codes; AWGN channel; MTCM codes; bit error probability; bit error rate performance; burst errors analysis; channel state information; code design; coding gains; coherent detection; computer simulation results; fading channel; micro-cellular wireless local loop access system; micro-cellular wireless local loop network; multiple trellis coded Q2PSK system; multiple trellis-coded modulation; perfect clock recovery; performance evaluation; simulation; wireless local loop applications; Bit error rate; Channel state information; Clocks; Computational modeling; Computer errors; Computer simulation; Error analysis; Error probability; Modulation coding; Phase shift keying;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.631107
