Title :
A new soft-decision adaptive decoder for space-time trellis code
Author :
Yisheng, Xue ; Xuelong, Zhu
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Soft-decision adaptive decoding of space-time trellis code (STTC) used in TDMA communication links is considered. To fully utilize preambles of successive downlink slots, bi-directional processing (BD-P) is proposed, which performs forward and backward adaptive decoding with two-step LMS (TSLMS) based channel tracking. Computer simulation shows that the proposed decoder can improve system performance distinctly on slowly or moderately fast time-varying channels. Besides, the computational complexity of the proposed BD-TSLMS decoder is modest
Keywords :
adaptive decoding; channel coding; least mean squares methods; telecommunication links; time division multiple access; time-varying channels; trellis codes; BD-P; TDMA communication links; TSLMS based channel tracking; backward adaptive decoding; bi-directional processing; computational complexity; forward adaptive decoding; preambles; soft-decision adaptive decoder; space-time trellis code; successive downlink slots; system performance; time-varying channels; two-step LMS; Bidirectional control; Computational complexity; Computer simulation; Convolutional codes; Decoding; Downlink; Least squares approximation; System performance; Time division multiple access; Time-varying channels;
Conference_Titel :
Personal Wireless Communications, 2000 IEEE International Conference on
Conference_Location :
Hyderabad
Print_ISBN :
0-7803-5893-7
DOI :
10.1109/ICPWC.2000.905794
