Enhanced quadrature signaling-based cooperative transmission with full rate and full diversity

Abstract

Quadrature signaling-based cooperative transmission is an efficient and simple scheme to obtain spatial diversity. However, this scheme causes date rate loss compared with direct transmission. In this work, our focus is on recovering from the data rate loss while simultaneously achieving spatial diversity. Particularly, an enhanced quadrature signaling-based cooperative scheme was designed, which can realize full-rate transmission by using the signal space diversity (SSD) technique. Then, accurate bit error rate (BER) expression for the full-rate scheme was derived over independent and non-identically distributed (INID) Rayleigh fading channels. Specifically, a closed-form BER expression is obtained, which is quite tight over the whole SNR range, and thus allows for rapid and efficient evaluation of system performance under various channel conditions. Moreover, an asymptotic approximation of the BER was derived to show that the full-rate scheme can achieve full diversity. Simulation results verify the tightness of the analysis and show that the full-rate scheme significantly outperforms the traditional quadrature signaling-based scheme by about 2 dB with the same complexity order.

Keywords

bit error rate / cooperative diversity / quadrature amplitude modulation / signal space diversity

References

[1] NosratiniaA, HunterT E, HedayatA. Cooperative communication in wireless networks [J]. IEEE Communications Magazine, 2004, 42(10): 74-80

[2] LanemanJ N, TseD N C, WornellG W. Cooperative diversity in wireless networks: Efficient protocols and outage behavior [J]. IEEE Transactions on Information Theory, 2004, 50(12): 3062-3080

[3] LanemanJ N, WornellG W. Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks [J]. IEEE Transactions on Information Theory, 2003, 49(10): 2415-2425

[4] MahinthanV, MarkJ W, ShenX-min. Performance analysis and power allocation for M-QAM cooperative diversity systems [J]. IEEE Transactions on Wireless Communications, 2010, 9(3): 1237-1247

[5] MahinthanV, MarkJ W, ShenX-min. A cooperative diversity scheme based on quadrature signaling [J]. IEEE Transactions on Wireless Communications, 2007, 6(1): 41-45

[6] MahinthanV, MarkJ W, ShenX-min. Adaptive regenerate and forward cooperative diversity system based on quadrature signaling [C]. IEEE Global Telecommunications Conference. San Francisco, United States, 20061899-2013

[7] BoutrosJ, ViterboE. Signal space diversity: A power- and bandwidth-efficient diversity technique for the Rayleigh fading channel [J]. IEEE Transactions on Information Theory, 1998, 44(4): 1453-1467

[8] AhmadzadehS A, MotahariS A, KhandaniA K. Signal space cooperative communication [J]. IEEE Transactions on Wireless Communications, 2010, 9(4): 1266-1271

[9] LuT, GeJ-h, YangY, GaoYang. BEP analysis for DF cooperative systems combined with signal space diversity [J]. IEEE Communications Letters, 2012, 16(4): 486-489

[10] KimH, KimN, KimJ, ParkH. Cooperative diversity system achieving full-rate and full-diversity by constellation rotation [C]. IEEE 66th Vehicular Technology Conference. Baltimore, MD, United States, 20071177-1181

[11] ProakisJ GDigital Communications [M], 20014th EditionNew York, McGraw-Hill: 267-282

[12] XiY, BurrA, WeiJ-b, GraceD. A general upper bound to evaluate packet error rate over quasi-static fading channels [J]. IEEE Transactions on Wireless Communications, 2011, 10(5): 1373-1377

[13] LoskotP, BeaulieuN C. Prony and polynomial approximations for evaluation of the average probability of error over slow-fading channels [J]. IEEE Transactions on Vehicular Technology, 2009, 58(3): 1269-1280

[14] SimonM K, AlouiniM SDigital communication over fading channels [M], 20052nd editionNew York, John Wiley & Sons: 772-773

[15] GoldsmithAWireless communications [M], 2005, Cambridge, Cambridge University Press: 127-130