摘要
通过研究利用星座扩展降低OFDM中峰均功率比(PAPR)的方法,提出了一种寻找次最优映射向量的新方法——联合搜索(JS)算法。该算法联合相邻的若干子载波,通过比较局部的峰值大小搜索次最优映射向量。仿真结果表明,JS算法在降低计算复杂度、提高PAPR抑制增益以及增强应用灵活性等方面都有明显改进。
Through investigating the PAPR（Peak-to-Average Power Ratio） reduction method via constellation extension, a new method is proposed to find a suboptimal constellation mapping solution, the joint searching （JS） algorithm. The method searches the suboptimal mapping by combining several adjacent sub-carriers and comparing the local peak value. Simulation results show that JS method performs better in the aspects of computational complexity, PAPR suppression performance and application flexibility
出处
《电讯技术》
北大核心
2010年第5期56-59,共4页
Telecommunication Engineering
