Title :
Performance of concatenated phase precoding and TCM on frequency selective fading channel
Author :
Sripimanwat, Keattisak ; Weinrichter, Hans ; Rajatheva, R.M.A.P. ; Ahmed, Kazi
Author_Institution :
Telecommun. Program, Asian Inst. of Technol., Patumthani, Thailand
Abstract :
In this paper, the concatenated system of phase preceding and trellis coded modulation (TCM) is investigated. Simulations of throughput (Rb) of 2 bits/sec/Hz show that phase precoding gains at BER of 10E-6 by 6.5 dB and 2.5 dB for rate 2/3 8PSK-TCM with four and eight state code respectively, compared to sub-optimum soft output equalization (SSE) at the receiver with the same TCM-codes. This pure precoding is verified on uncoded-QPSK in which more than 30 dB is gained compared to SSE. In addition at Rb of 3, a newly designed multiple-TCM (16PSK-2MTCM, 8 states) with precoding confirms this concatenation system for powerful ISI cancellation by achieving more than 1.5 dB of gain
Keywords :
concatenated codes; fading channels; interference suppression; intersymbol interference; phase coding; phase shift keying; trellis coded modulation; 16PSK-2MTCM; BER; ISI cancellation; TCM; concatenated phase precoding; frequency selective fading channel; multiple-TCM; precoding gains; rate 2/3 8PSK-TCM; sub-optimum soft output equalization; trellis coded modulation; uncoded-QPSK; Bit error rate; Concatenated codes; Decision feedback equalizers; Decoding; Fading; Frequency; Phase modulation; Quadrature amplitude modulation; Transmitters; Viterbi algorithm;
Conference_Titel :
Electrical and Computer Engineering, 2000 Canadian Conference on
Conference_Location :
Halifax, NS
Print_ISBN :
0-7803-5957-7
DOI :
10.1109/CCECE.2000.849674
