Interference-aware-based decode-and-forward relay selection algorithm for two-path relaying protocol

doi:10.3969/j.issn.1000-1565.2016.05.017

Abstract

Abstract: Spectral efficiency loss due to the half-duplex operated in relay nodes can be potentially improved by the two-path relaying(TPR)protocol.However,the mutual interference between the relay nodes can negatively affect the performance.Therefore,relay selection can be crucial to the system performance.In this paper,we propose a heuristic relay selection method for the decode-and-forward TPR strategy in order to maximize the transmission rate.Different from the existing relay selection methods,the inter-relay interference is considered.Meanwhile,the design principle of this method is based on not only the link conditions in current time slot,but also those of the relay node selected in previous time slot.Simulation results are conducted to verify the effectiveness of the proposed heuristic relay selection scheme.

Key words: inter-relay interference, optimization, relay selection, spectral efficiency, two-path relaying.

CLC Number:

TN912

ZHANG Yu,DING Ling. Interference-aware-based decode-and-forward relay selection algorithm for two-path relaying protocol[J]. Journal of Hebei University (Natural Science Edition), 2016, 36(5): 554-560.

References

[1] ZHANG Q,FENG Z,YANG T,et al.Optimal power allocation and relay selection in multi-hop cognitive relay networks[J].Wireless Personal Communications,2016,258(10):1641-1645.DOI:10.1007/s11277-015-3013-y.
[2] 江雪,郑宝玉.双向中继信道中用户和中继协作干扰管理算法[J].华中科技大学学报(自然科学版),2016,44(4):18-22. JIANG X,ZHENG B Y,User and relay cooperative interference management in two-way relay chanels[J].J Huazhong Univ of Scie Tech(Natural Science Edition),2016,44(4):18-22.DOI:10.13245/j.hust.160404.
[3] 陈凯.无线网络中协作中继通信关键技术的研究[D].北京:北京邮电大学,2010.
[4] ZHAO Y,ADVE R,LIM T J.Improving amplify-and-forward relay networks: optimal power allocation versus Selection[J].IEEE Transactions on Wireless Communications,2007,6(8):3114-3123.
[5] SADEK A K,HAN Z,LIU K J R.Distributed relay-assignment protocols for coverage expansion in cooperative wireless networks[J].IEEE Transactions on Mobile Computing,2009,9(4):505-515.
[6] LANEMAN J N,TSE D N C,WORNELL G W.Cooperative diversity in wireless networks: Efficient protocols and outage behavior[J].IEEE Trans Inf Theory,2004,50(12):3062-3080.
[7] KRAMER G,GASTPAR M,GUPTA P.Cooperative strategies and capacity theorems for relay networks[J].IEEE Transactions on Information Theory,2005,51(9):3037-3063.
[8] COVER T,GAMAL A E.Capacity theorems for the relay channel[J].IEEE Transactions on Information Theory,1979,25(5):572-584.
[9] RANKOV B,WITTNEBEN A.Spectral efficient protocols for half-duplex fading relay channels[J].Selected Areas in Communications IEEE Journal on,2007,25(2):379-389.
[10] CHOI J M,HAN J S,JEON S,et al.Design of training sequences and channel estimation for amplify-and-forward two-path relaying networks[J].Eurasip Journal on Wireless Communications & Networking,2014(1):1-10.
[11] ZHANG Y,PANG L,LI J.Power allocation and relay selection for AF two-path successive relaying networks[J].Wireless Communications & Mobile Computing,2013,14(4):487-496.
[12] SOLEIMANI-NASAB E,ARDEBILIPOUR M.Multi-antenna AF two-way relaying over nakagami-m fading channels[J].Wireless Personal Communications,2013,73(3):717-729.
[13] KRIKIDIS I,THOMPSON J,MCLAUGHLIN S.Relay selection issues for amplify-and-forward cooperative systems with interference[C]. Wireless Communications and Networking Conference,2009.IEEE.2009:1-6.
[14] ZHANG P,XU Z,WANG F,et al.A relay assignment algorithm with interference mitigation for cooperative communication[C]. Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference.IEEE Press,2009:1286-1291.
[15] RAPPORT B T S.Wireless communications-principles and practice[M].Wireless Communications: Principles and Practice.Prentice Hall PTR,2010:70-88.
[16] BLETSAS A,KHISTI A,REED D P,et al.A simple cooperative diversity method based on network path selection[J].IEEE J on selected Area in Commun ications,2006,24(3):659-672.