论文部分内容阅读
本文提出了一种较简单的适用于高速率正交频分复用(OFDM)传输系统的准优化峰均功率比(PAPR)编码方案。方案中不仅给出了优良码字的寻找方法,还阐述和证明了峰值包络功率(PEP)不随码字的循环移位和翻转而改变的特性。本文提出的编码算法主要由选择优良码字、码字的循环移位和码字的翻转三部分组成。计算机仿真的结果显示该编码能够获得与最小化编码相似的传输可靠性,但是码率却得到了一定的改善,方法也更简单些。
This paper presents a simple quasi-optimized peak-to-average power ratio (PAPR) coding scheme suitable for high-rate Orthogonal Frequency Division Multiplexing (OFDM) transmission systems. In this scheme, not only the search method for good codewords but also the characteristic that the Peak Envelope Power (PEP) does not change with the cyclic shift and the flip of codewords are also presented and proved. The coding algorithm proposed in this paper is mainly composed of three parts: selecting good codeword, codeword cyclic shift and codeword inversion. The result of computer simulation shows that this code can obtain the transmission reliability similar to the minimization code, but the code rate has been improved and the method is simpler.