Joint Carrier Frequency Offset and Channel Estimation for Amplify-and-Forward Cooperative OFDM System |
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Authors: | Qi Jiang Kaibin Zhang Jimin Liu Gang Shen |
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Affiliation: | (1) Department of Electrical Engineering, Chung Hua University, No. 707, Sec. 2, WuFu Rd., Hsinchu, Taiwan, ROC;(2) Institute of Engineering and Science, Chung Hua University, No. 707, Sec. 2, WuFu Rd., Hsinchu, Taiwan, ROC |
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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. |
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Keywords: | |
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