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—This letter is concerned with a frequency-offset estimation technique for OFDM-based transmission systems. The frequency estimation technique utilizes a repetitive signal structure inside of a OFDM symbol which is used to enlarge the range and increase the accuracy of offset estimation. Also, an averaged decision directed channel estimation (ADDCE)(More)
—This paper focuses on the average bit error rate (BER) and diversity order analysis of the distributed Alamouti's code in dissimilar cooperative networks with channel state information (CSI)-assisted relays. We first assume that the relays adopt the amplifying coefficient proposed in [1]. Lower and upper bounds of the average BER of the distributed(More)