J4 ›› 2010, Vol. 37 ›› Issue (2): 334-339.doi: 10.3969/j.issn.1001-2400.2010.02.027

• Original Articles • Previous Articles     Next Articles

Full rate STBC cooperation scheme for the multi-antenna relay

ZHANG Tian-kui;CHENG Jie;FENG Chun-yan   

  1. (College of Information and Communication Eng., Beijing Univ. of Posts and Telecommunications, Beijing  100876, China)
  • Received:2008-10-31 Online:2010-04-20 Published:2010-06-03
  • Contact: ZHANG Tian-kui E-mail:zhangtiankui@bupt.edu.cn

Abstract:

In order to obtain the full rate and increase the diversity gain for multi-antenna relay space time block coded (STBC) cooperation, we combine relay STBC cooperation with the single relay's multi-antenna beam forming (BF) and propose a multi-antenna relay STBC cooperation (MARSC) scheme. The relay adopts orthogonal frequency division multiplexing (OFDM) for transmission, symbols in the same carriers are forwarded by the relay STBC cooperation, and BF is executed between antennas of the relay. Furthermore, we design a suitable finite rate feedback scheme to reduce the channel feedback overhead. Simulation results show that the proposed MARSC scheme can obtain the full rate and the high diversity gain which is brought by STBC cooperation and the relay's multi-antenna at the same time, when the user just employs the STBC decode algorithm, and that the proposed finite rate scheme can significantly reduce the channel feedback overhead with a smaller system performance loss.

Key words: cooperative relay, space time block code, beam forming, multiple input multiple output, orthogonal frequency division multiplexing, finite rate feedback