Journal Search Engine
The Journal of The Korea Institute of Intelligent Transport Systems Vol.8 No.6 pp.142-149
빠른 레일리 페이딩채널에서 MTCM 부호와 STBC 를 결합한 시스템의 성능평가
Performance of the Concatenated System of MTCM Codes with STBC on Fast Rayleigh Fading Channels
Abstract
Space-time block codes (STBC) have no coding gain but they provide a full diversity gain with relatively low encoder/decoder complexity. Therefore, STBC should be concatenated with an outer code which provides an additional coding gain. In this paper, we consider the concatenation of multiple trellis-coded modulation (MTCM) codes with STBC for achieving significant coding gain with full antenna diversity. Using criteria of equal transmit power, spectral efficiency and the number of trellis states, the performance of concatenated scheme is compared to that of previously known space-time trellis codes (STTC) in terms of frame error rate (FER). Simulation results show that MTCM codes concatenated with STBC offer better performance on fast Rayleigh fading channels, than previously known STTC with two transmit antennas and one receive antenna.
