一种低复杂度的OFDM信号受限压扩新方案

A New Constrained Expanding Scheme for OFDM Signals of Low Complexity

为了改善原有的非线性压扩方案的误比特率性能,文章将非线性压扩与受限剪波方案相结合,提出了一种降低OFDM信号峰均比的低复杂度受限压扩新方案。仿真结果表明,该方案能够有效地降低系统的误比特率,减小信号的带外功率辐射,而且该方案的接收端结构简单,易于实施,实用性强。

In order to improve Bit Error Rate performance of the nonlinear expanding scheme proposed before, this paper, combining nonlinear expanding with constrained clipping, proposes a new constrained expanding scheme of low complexity, this scheme can reduce the PAPR of OFDM signals. Simulation results show that the proposed scheme can effectively reduce the BER of the system and decrease the out-of-band power emissions of the signals. Moreover, the scheme has a simple structure at the receiver side, is easy in implementation, and thus is of good practicability.