WiMAX系统中降低PAPR的预留子载波改进算法  

Research on Improved Tone Reservation Algorithm for PAPR Reduction in the WiMAX System

作　　者：郑洪江[1,2] 陈伟[2] 谢涛[2] 王会鲜[1,2] 

机构地区：[1]塔里木大学信息工程学院,新疆阿拉尔8433001 [2]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2009年第1期12-15,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：国家自然科学基金资助项目(40706058)

摘　　要：在高速移动环境下,高PAPR成为影响OFDM系统性能和实现的关键。针对传统预留子载波法中计算量过大这一缺点,分析研究了预留子载波算法的基本原理,提出了一种改进的算法。改进算法以预留子载波算法为基础,引入改进的牛顿迭代算法。与传统算法相比,改进算法在性能与计算复杂度之间取得了较好的平衡,具有较强的实用性。In the high - speed mobile environment, a high PAPR is a key factor affecting the system performance and achievement of OFDM. In order to reduce the large computation complexity of conventional TR,tbe basic principle of the TR algorithm was analyzed. An improved algorithm was proposed. The improved Newton - method was introduced based on the Tone Reservation algorithm. Compared with the traditional algorithm, the improved algorithm achieves a good compromise between the performance and complexity of computation with higher practicability

关 键 词：OFDM 峰均功率比 预留子载波 

分 类 号：TN911[电子电信—通信与信息系统]