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Low CompIexity SLMAIgorithm Based on CycIic Shift and BIind Detection in SFBC MIMO-OFDM System
Author(s): 
Pages: 1637-1641
Year: Issue:  8
Journal: Acta Electronica Sinica

Keyword:  space frequency block coding multiple input multiple output orthogonal frequency division multiplexing (SFBC MIMO-OFDM)selective mapping (SLM)peak to average power ratio (PAPR)cyclic shiftblind detection;
Abstract: In order to reduce the computational complexity of the conventional selective mapping (SLM)algorithm in the space frequency block coding multiple input multiple output orthogonal frequency division multiplexing (SFBC MIMO-OFDM)sys-tem,this paper proposes to produce more candidate sequence pairs with different peak to average power ratio (PAPR)by the time domain cyclic shift and equivalent SFBC of signals.The receiving part can restore cyclic shift factor and phase rotation factor by comparing the distance of the inversed rotation sequences and its nearest constellation points.The simulation results show that the proposed method can effectively reduce the PAPR of SFBC MIMO-OFDM system.In addition,the proposed method can reduce the computation complexity of the conventional SLM significantly and can obtain similar bit error rate (BER)performance as the con-ventional SLM with perfect side information.
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