Differential Modulation for Decode-and-Forward Multiple Relay Systems

被引：19

作者：

Zhu, Yonglan ^{[1
]}

Kam, Pooi-Yuen ^{[1
]}

Xin, Yan ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2010年 / 58卷 / 01期

关键词：

Decode-and-forward; error probability; Rayleigh fading; relay channels; selection relaying; RAYLEIGH-FADING CHANNELS; COOPERATIVE DIVERSITY; ERROR PROBABILITIES; WIRELESS NETWORKS; PERFORMANCE; TRANSMISSION; DEMODULATION; RECEPTION; PROTOCOLS;

D O I：

10.1109/TCOMM.2010.01.080239

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：

In this paper, differential modulation and demodulation in a multiple relay system using either the decode-and-forward (DF) protocol or the selection relaying (SR) protocol, are investigated. For the DF protocol, the detectors at the destination take the average bit error probabilities (BEPs) of all the source-relay transmissions into account. For a DF single relay system, the exact BEP and its approximation at high signal-to-noise ratio (SNR) are obtained. The approximation of the BEP at high SNR shows explicitly the diversity order and the different effects of the source-relay link and the relay-destination link on the end-to-end error performance. For a DF multiple relay system, a Chernoff upper bound on the BEP and a high SNR approximation for the BEP are obtained. For the SR protocol, some computational complexity is shifted from the destination to all the relays. Each relay computes the instantaneous BEPs of the source-relay transmissions, and uses the instantaneous BEPs to decide whether to transmit or remain silent. The destination performs simple maximal ratio combining (MRC) reception whose error performance is analyzed at high SNR. It shows from an error probability perspective that the SR protocol offers a space diversity order equal to the number of all the potential cooperating nodes.

引用

页码：189 / 199

页数：11

共 24 条

[11] TIGHT BOUNDS ON RICIAN-TYPE ERROR PROBABILITIES AND SOME APPLICATIONS [J].

KAM, PY .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1994, 42 (12) :3119-3128

[12] Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks [J].

Laneman, JN ;

Wornell, GW .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2003, 49 (10) :2415-2425

[13] 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

[14]

Mathai A.M., 1992, Quadratic Forms in Random Variables: Theory and Applications

[15]

Proakis J.G., 1995, Digital Communications

[16] Symbol error probabilities for general cooperative links [J].

Ribeiro, A ;

Cai, XD ;

Giannakis, GB .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2005, 4 (03) :1264-1273

[17]

Simon M. K., 2004, Digital Communication Over Fading Channels, V2nd

[18] A Simple Single Integral Representation of the Bivariate Rayleigh Distribution [J].

Simon, Marvin K. ;

Alouini, Mohamed-Slim .

IEEE COMMUNICATIONS LETTERS, 1998, 2 (05) :128-130

[19] Differential modulation for two-user cooperative diversity systems [J].

Tarasak, P ;

Minn, H ;

Bhargava, VK .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2005, 23 (09) :1891-1900

[20]

Viterbi A. J, 1995, CDMA: principles of spread spectrum communication

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