Adaptive Modulation for Opportunistic Decode-and-Forward Relaying

被引：22

作者：

Ma, Yi ^{[1
]}

Tafazolli, Rahim ^{[1
]}

Zhang, Yuanyuan ^{[1
]}

Qian, Chuyi ^{[1
]}

机构：

[1] Univ Surrey, Ctr Commun Syst Res, Surrey GU2 7XH, England

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2011年 / 10卷 / 07期

关键词：

Adaptive modulation; diversity; decode-and-forward; opportunistic relay; spectral efficiency; COOPERATIVE DIVERSITY; POWER ALLOCATION; FADING CHANNELS; NETWORKS; CAPACITY;

D O I：

10.1109/TWC.2011.051311.091773

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Orthogonal relay based cooperative communication enjoys distributed spatial diversity gain at the price of spectral efficiency. This work aims at improving the spectral efficiency for orthogonal opportunistic decode-and-forward (DF) relaying through employment of novel adaptive modulation scheme. The proposed scheme allows source and relay to transmit information in different modulation formats, while the MAP receiver is employed at destination for the diversity combining. Given the individual power constraint and target bit-error-rate (BER), the proposed scheme can significantly improve the spectral efficiency in comparison with the non-adaptive DF relaying and adaptive direct transmission.

引用

页码：2017 / 2022

页数：6

共 14 条

[1] Capacity of Rayleigh fading channels under different adaptive transmission and diversity-combining techniques [J].

Alouini, MS ;

Goldsmith, AJ .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 1999, 48 (04) :1165-1181

[2] A simple cooperative diversity method based on network path selection [J].

Bletsas, A ;

Khisti, A ;

Reed, DP ;

Lippman, A .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2006, 24 (03) :659-672

[3]

Gill P.E., 2000, PRACTICAL OPTIMIZATI, V1st

[4] Variable-rate variable-power MQAM for fading channels [J].

Goldsmith, AJ ;

Chua, SG .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1997, 45 (10) :1218-1230

[5]

Hwang K. S., 2008, P IEEE ISIT JUL, P2678

[6] Cooperative diversity in wireless networks: Efficient protocols and outage behavior [J].

Laneman, JN ;

Tse, DNC ;

Wornell, GW .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2004, 50 (12) :3062-3080

[7] Fading channels: how perfect need "perfect side information" be? [J].

Lapidoth, A ;

Shamai, S .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2002, 48 (05) :1118-1134

[8]

Li YH, 2007, IEEE T WIREL COMMUN, V6, P948, DOI [10.1109/TWC.2007.05256, 10.1009/TWC.2007.05256]

[9] Performance of Optimum Switching Adaptive M-QAM for Amplify-and-Forward Relays [J].

Nechiporenko, Tyler ;

Kalansuriya, Prasanna ;

Tellambura, Chintha .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2009, 58 (05) :2258-2268

[10] On the Capacity of Rayleigh Fading Cooperative Systems under Adaptive Transmission [J].

Nechiporenko, Tyler ;

Phan, Khoa T. ;

Tellambura, Chintha ;

Nguyen, Ha H. .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2009, 8 (04) :1626-1631

← 1 2 →