Abstract:

A reducedcomplexity partial transmit sequences (PTS) scheme based on dynamic power threshold is proposed to resolve the intrinsic high peak-to-average power ratio (PAPR) problem of orthogonal frequency division multiplexing (OFDM) systems. In the proposed PTS scheme, a discrimination function P-n is generated to be compared with the threshold.Only those samples with P-n greater than or equal to a preset threshold are used for peak power calculation during the process of selecting a candidate signal with the lowest PAPR for transmission. Compared to the conventional PTS scheme, the proposed one achieves almost the same PAPR reduction performance and bit error rate(BER) distribution with much lower computational complexity.