An adaptive transmission scheme for AF-OFDM relaying systems with sub-carrier mapping

Authors:
Funian Li;Guangxi Zhu;Desheng Wang;Yonghui Chen
Affiliations:
Dept. of Electronics and Engineering Information, Huazhong University of Science and Technology and Dept. of Electronics and Engineering Information, Wuhan University of Science and Technology, Wu ...;Dept. of Electronics and Engineering Information, Huazhong University of Science and Technology, Wuhan, China;Dept. of Electronics and Engineering Information, Huazhong University of Science and Technology, Wuhan, China;Dept. of Electronics and Engineering Information, Huazhong University of Science and Technology, Wuhan, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

Citing 5
Cited 0

A Low Complexity Subcarrier Pairing Scheme for OFDM Based Multiple AF Relay Systems

ICCIT '08 Proceedings of the 2008 Third International Conference on Convergence and Hybrid Information Technology - Volume 01
Amplify-and-Forward Cooperative Diversity Schemes for Multi-Carrier Systems

IEEE Transactions on Wireless Communications - Part 2
Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels

IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior

IEEE Transactions on Information Theory
Cooperative communication in wireless networks

IEEE Communications Magazine

Quantified Score

Hi-index	0.00

Visualization

Abstract

Relay transmission is an efficient solution to combat wireless channel fading and to increase system throughput in future board communication. In amplify-and-forward(AF) OFDM relay system, since the channel between the first hop(source-relay) and the second hop(relay-destination) varies independently, proper sub-carrier mapping (SCM) at the relay has been shown to improve the average end-to-end capacity evidently. However SCM has a poor performance at low SNR. In this paper, assuming that perfect channel knowledge is available at the destination, an adaptive transmission scheme is proposed. The transmission scheme, which is based on instantaneous channel quality, is selected to offer maximum the end-to-end system capacity. The efficiency of the proposed solution is demonstrated by both analytical performance and simulations.