Earticle

초록

영어

In this paper, we consider the transmission scheme for asymmetric decode-and-forward (DF) multi-input multi-output (MIMO) two-way relay system with channel estimation error. In order to transmit with asymmetric data rates from the relay to the receivers according to their individual link qualities, we propose a novel transmission scheme for the broadcast phase by employing a priori bit information. The proposed scheme employs multi-antenna and network coding at the relay. The idea is the weaker link receiver exploits a priori bit information in each transmit symbol, so that it only needs to decode on a subset of the transmit symbol constellation. Subject to the same bit error rate constraint, the weaker link receiver can decode at lower signal-to-noise ratio compared to the stronger link. The different signal labeling used for mapping bits to symbols at the relay cause different minimum Euclidean distance, so it is shown to be crucial for the performance at the receivers. Subsequently, we investigate the effect of the channel estimation error on the system performance. Simulations show that the proposed transmission scheme can be applied to practical scenarios with asymmetric channel qualities.

목차

Abstract
 1. Introduction
 2. System Model
 3. Transmission Scheme
 4. Performance Analysis
 5. Conclusions
 Acknowledgements
 References

키워드

저자

• Jinhong Fan [ College of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China, College of Information Engineering, North China University of Technology, Beijing, China ]
• Chaowei Yuan [ College of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China ]
• Ke Xiao [ College of Information Engineering, North China University of Technology, Beijing, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Hybrid Information Technology

• 간기

  격월간

• pISSN

  1738-9968

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605