Cooperative system with distributed beamforming and its outage probability

被引：24

作者：

Kim, Jung-Bin ^{[1
]}

Kim, Dongwoo ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Engn & Comp Sci, Ansan 425791, South Korea

来源：

2007 IEEE 65TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2007年

关键词：

cooperative system; decode-and-forward (DF); virtual antenna array; distributed beamforming (DBF); diversity; capacity; outage probability;

D O I：

10.1109/VETECS.2007.341

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：

Conventional decode-and-forward (DF) relaying with multiple relays can increase the reliability by creating a virtual antenna array, but induces the capacity loss. We introduce a DF relaying with distributed beamforming (DBF) which has better reliability than conventional DF relaying as well as increases the capacity. Under the power constraints of each relay, not the total sum power of all relays, we find the optimal DBF weights, for each relay, which maximize the received signal-to-noise ratio (SNR) at the destination. We derive an approximated probability density function (PDF) of received SNR and analyze the outage probability in Rayleigh fading channels. Numerical results show that derived probability is very well matched with the simulation results.

引用

页码：1638 / 1641

页数：4

共 7 条

[1] Exact symbol error probability of a cooperative network in a Rayleigh-Fading environment [J].

Anghel, PA ;

Kaveh, M .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2004, 3 (05) :1416-1421

[2]

Gradshteyn I.S., 1994, Tables of Integrals, Series, and Products

[3] Accurate simple closed-form approximations to Rayleigh sum distributions and densities [J].

Hu, J ;

Beaulieu, NC .

IEEE COMMUNICATIONS LETTERS, 2005, 9 (02) :109-111

[4] 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

[5]

LEE IH, 2006, IN PRESS IEEE COMMUN

[6]

SCHWARTZ M, 1966, COMMUNICATION SYSTEM

[7]

Zhao Y, 2005, IEEE COMMUN LETT, V9, P700, DOI [10.1109/LCOMM.2005.1496587, 10.1109/LCOMM.2005.08025]

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