低复杂度部分传输序列算法及其现场可编程门阵列实现

在传统的部分传输序列(PTS)算法中，计算复杂度高，且需传送边带信息，不利于硬件实现。针对传统PTS算法的这些缺点，设计出一种基于导频信息传送相位旋转因子并结合m序列降低复杂度的PTS算法。其中，m序列作为相位旋转因子，可以降低序列产生硬件实现资源的消耗；导频传送相位旋转因子可以免除边带信息的发送。采用Matlab仿真验证了该算法的可行性，并设计出适合在现场可编程门阵列(FPGA)中实现的正交频分复用(OFDM)系统峰均比抑制模块。通过硬件测试，此模块在降低OFDM系统的复杂度的同时，也能够很好完成峰均比抑制功能。

Low complexity partial transmit sequence algorithm and realization on field programmable gate array

The conventional Partial Transmit Sequence (PTS) approaches get high computational complexity and need to transmit side information, which is difficult for hardware implementation. Concerning these problems, this paper proposed an algorithm of using m sequences as phase rotation factors and transferring them by pilot information. The m sequence can reduce the complexity of Field Programmable Gate Array (FPGA) implementation and the pilot transferring phase rotation factor need no side information. The Matlab simulation proves the algorithm is effective. Meanwhile, a Peak-to-Average Power Ratio (PAPR) suppression module was designed to be implemented on FPGA, and the results show that this module not only reduces the complexity of OFDM systems, but also works well in PAPR suppression.