Joint Carrier Frequency Offset and Channel Estimation for Amplify-and-Forward Cooperative OFDM System

Authors:
Qi Jiang;Kaibin Zhang;Jimin Liu;Gang Shen
Affiliations:
Research & Innovation Center (R&I), Alcatel-Lucent Shanghai Bell Co., Ltd., Shanghai, China;Research & Innovation Center (R&I), Alcatel-Lucent Shanghai Bell Co., Ltd., Shanghai, China;Research & Innovation Center (R&I), Alcatel-Lucent Shanghai Bell Co., Ltd., Shanghai, China;Research & Innovation Center (R&I), Alcatel-Lucent Shanghai Bell Co., Ltd., Shanghai, China
Venue:
Wireless Personal Communications: An International Journal
Year:
2010

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Abstract

In this paper, we develop a new joint carrier frequency offset (CFO) and channel estimation algorithm for Amplify-and-Forward (AF) cooperative (CO)-OFDM systems. An expanded Basis Expansion Model (E-BEM) is proposed for time variant multipath channels. Based on the E-BEM, a joint OFDM channel estimation and synchronization method is derived. We also apply the space-frequency-block-code (SFBC) to AF CO-OFDM systems. Simulation results reveal that the proposed joint algorithm works well, leading to considerable gains of overall performance.