New PAPR Reduction Scheme for Alamouti Coded OFDM Systems
نویسنده
چکیده
Additive mapping scheme represents alternative signals of selected mapping (SLM) by linear combination of signals in time domain for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) system. It can reduce the computational complexity considerably without sacrificing PAPR reduction performances especially for the OFDM system with quadrature amplitude modulation (QAM). In this paper, we extend the additive mapping scheme to Alamouti coded OFDM systems. The same method as in the single antenna can be applied to the Alamouti STBC-OFDM system. On the other hand, some modifications of additive mapping signals are needed for the Alamouti SFBC-OFDM system.
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