Pilot-Aided Channel Estimation in Cooperative SFBC-OFDM Networks
Cooperative Relaying is deemed as one of the most promising techniques in the current research in terms of providing superior space coverage and robust performance. In this paper, we focus on cooperative wireless networks employing Space Frequency Block Coding (SFBC) and Orthogonal Frequency Division Multiplexing (OFDM) at the relay nodes, which use the well-known Decode and Forward (DF) protocol. Previous works usually assume perfect channel estimation at the receiving end, which is an unrealistic assumption. We focus here on estimating the Relays to Destination (RTD) links through pilots insertion at the relays side. The efficiency of the proposed channel estimation algorithm is tested using the Mean Square Error (MSE) criterion and good agreement between the estimated and actual values is observed. We then evaluate overall performance of the cooperative SFBC-OFDM system through Bit Error Rate (BER) criterion under realistic situation where proposed algorithm is employed.
Channel estiamtion Cooperative Relays Orthogonal Frequency Division Multiplexing (OFDM) Space Frequency Block Coding(SFBC) Wireless communications
M. Abou Bakr Othman Mahmoud H. Ismail Magdy S. El-Soudani
Department of Electronics and Electrical Communications Faculty of Engineering - Cairo University Giza 12613, Egypt
国际会议
2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)
长沙
英文
103-107
2010-12-14（万方平台首次上网日期，不代表论文的发表时间）