Alamouti STBC MIMO OFDM System Using ZCT Precoded Based SLM Technique for PAPR Reduction

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Provided by: Creative Commons
Topic: Mobility
Format: PDF
OFDM system is combined with Multiple-Input Multiple-Output (MIMO) in order to increase the system capacity and diversity gain. However, one of the major drawback of MIMO-OFDM have high Peak-to-Average Power Ratio (PAPR) in order to the signals transmitted on different antennas. In this paper, the authors propose Zadoff-Chu matrix Transform (ZCT) precoding based SeLected Mapping (SLM) technique to reduce the Peak-to-Average Power Ratio (PAPR) in Alamouti STBC MIMO-OFDM systems. This paper is that different phase rotation sequences are multiplied by their corresponding input sequence generated by the STBC (Space-Time Block Coded) encoder at the transmitter and precoding the symbols with ZCT precoder and the lowest PAPR is selected for transmission.
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