TY - JOUR
T1 - Multiple-symbol differential detection for MPSK space-time block codes
T2 - Decision metric and performance analysis
AU - Gao, Chunjun
AU - Haimovich, Alexander M.
AU - Lao, Debang
N1 - Funding Information:
Paper approved by A. F. Naguib, the Editor for Wireless Communication of the IEEE Communications Society. Manuscript received January 16, 2004; revised January 26, 2006. This work was supported in part by the National Science Foundation under Award ANI-0338788, and in part by the Air Force Office for Scientific Research under Grant F49620-00-1-0107. This paper was presented in part at the Conference on Information Sciences and Systems, Princeton, NJ, March 2002.
PY - 2006/8
Y1 - 2006/8
N2 - Approximately 3 dB signal-to-noise ratio (SNR) loss is always paid with conventional differential space-time block codes (STBCs), compared with coherent STBCs. In this paper, a multiple-symbol differential detection (MSDD) technique is proposed for M-ary phase-shift keying (PSK) STBCs. The new scheme can greatly narrow the 3-dB performance gap by extending the observation interval for differential decoding. The technique uses maximum-likelihood sequence detection instead of traditional symbol-by-symbol detection, and is carried out on the slow, flat Rayleigh fading channel. A generalized decision metric is derived for an observation interval of arbitrary length. It is shown that for a moderate number of symbols, MSDD provides approximately 1.5 dB performance improvement over conventional differential detection. In addition, a closed-form pairwise error probability and approximate bit-error probability (BEP) are derived for multiple-symbol differential binary PSK STBC. Results show that the theoretical BEP matches simulation results well. The BEP is shown to converge asymptotically with the number of symbols in the observation interval to that of the differential scheme with coherent detection.
AB - Approximately 3 dB signal-to-noise ratio (SNR) loss is always paid with conventional differential space-time block codes (STBCs), compared with coherent STBCs. In this paper, a multiple-symbol differential detection (MSDD) technique is proposed for M-ary phase-shift keying (PSK) STBCs. The new scheme can greatly narrow the 3-dB performance gap by extending the observation interval for differential decoding. The technique uses maximum-likelihood sequence detection instead of traditional symbol-by-symbol detection, and is carried out on the slow, flat Rayleigh fading channel. A generalized decision metric is derived for an observation interval of arbitrary length. It is shown that for a moderate number of symbols, MSDD provides approximately 1.5 dB performance improvement over conventional differential detection. In addition, a closed-form pairwise error probability and approximate bit-error probability (BEP) are derived for multiple-symbol differential binary PSK STBC. Results show that the theoretical BEP matches simulation results well. The BEP is shown to converge asymptotically with the number of symbols in the observation interval to that of the differential scheme with coherent detection.
KW - Bit-error rate (BER)
KW - Decision metric
KW - Multiple-symbol differential detection (MSDD)
KW - Pairwise error probability (PEP)
KW - Space-time block code (STBC)
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U2 - 10.1109/TCOMM.2006.878842
DO - 10.1109/TCOMM.2006.878842
M3 - Article
AN - SCOPUS:33747813555
SN - 0090-6778
VL - 54
SP - 1502
EP - 1510
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 8
ER -