tailieunhanh - Báo cáo hóa học: " Research Article Performance Analysis of OFDM-Based Decode-and-Forward Relay Network with Multiple Interferers over Rayleigh Fading Channels"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Performance Analysis of OFDM-Based Decode-and-Forward Relay Network with Multiple Interferers over Rayleigh Fading Channels | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011 Article ID 202549 15 pages doi 2011 202549 Research Article Performance Analysis of OFDM-Based Decode-and-Forward Relay Network with Multiple Interferers over Rayleigh Fading Channels Jia Tu 1 Yueming Cai 1 2 and Weiwei Yang1 1 Institute of Communications Engineering PLA University of Science and Technology Nanjing 210007 China 2National Mobile Communications Research Laboratory Southeast University Nanjing 210096 China Correspondence should be addressed to Jia Tu tujia_666@ Received 1 June 2010 Revised 19 August 2010 Accepted 8 October 2010 Academic Editor Robert Schober Copyright 2011 Jia Tu et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. We consider an OFDM-based decode-and-forward relay network with multiple uncorrelated equal power interferers over frequency-selective Rayleigh fading channels and derive a unified closed-form expression of average symbol-error ratio for Mary phase-shift-keying M-PSK modulation. Simulations are carried out to validate our analyses. 1. Introduction Relay communications as a promising technique to help in attaining broader coverage and combating the impairments of the wireless channel have gained significant interests at the beginning of this century 1-3 . Recently various cooperation protocols for example amplify-and-forward AF and decode-and-forward DF 2 have been proposed for cooperative wireless networks. Subsequently the performance analysis of the relay network has attracted a lot of interest considering different issues such as cooperation protocols 4 channel models 5 power allocation schemes 6 and so on. Due to aggressive reusing of frequency channels for high-spectrum utilization the cochannel interference CCI is unavoidable in the cellular system. .