Title :
Performance Analysis Of A Dsttd System With Decision-Feedback Detection
Author :
Kim, Hyounkuk ; Park, Hyuncheol ; Kim, Taejoon ; Eo, Iksoo
Author_Institution :
Sch. of Eng., Inf. & Commun. Univ., Daejeon
Abstract :
We investigate closed-form bit error rate (BER) expressions for the double space-time transmit diversity (DSTTD) system with a zero-forcing decision-feedback (ZF-DF) detector. We show that the lower Alamouti´s STTD unit can obtain the second order diversity gain. However, the upper one cannot guarantee the fourth order diversity due to the effect of error propagation. For example, it simply gives 3.5 dB signal-to-noise ratio (SNR) advantage over the lower one at the bit error rate (BER) of 10-3. Under the same environment, overall BER performance also suffers from 5.6 dB performance degradation over a maximum likelihood (ML) detector
Keywords :
automatic repeat request; diversity reception; error statistics; matrix algebra; maximum likelihood detection; BER; DSTTD system; SNR; closed-form bit error rate; double space-time transmit diversity; fourth order diversity; maximum likelihood detector; signal-to-noise ratio; the bit error rate; zero-forcing decision-feedback detector; Bit error rate; Detectors; Diversity methods; Frequency; Information technology; Matrix decomposition; Maximum likelihood detection; Performance analysis; Receiving antennas; Transmitting antennas;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1661077
