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International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3

Yi Xie
Yi Xie
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In this paper, a new algorithm has introduced the most estimation similarity, channel coefficients fading and move the carrier frequency systems MIMOOFDM. The purpose of this paper provides an algorithm to synchronize and estimate channel coefficients which has low computational complexity. The proposed algorithm using the process sequence containing the training symbols, carrier frequency offset and channel coefficients fading, estimate in two consecutive stages. Consequently, low computational complexity and having easy implementation. Moreover, the algorithm can be used in a variety of systems STC-OFDM. To provide an appropriate scale to measure the efficiency of suggested EM algorithm, Cramer-Rao bounds are proposed. The results of performed simulations show the proper function of EM estimator in all SNR measures.

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