基于IEEE802.16d系统的简易信道估计算法  

Simple Channel Estimation Based on IEEE802.16d Communication System

作　　者：易淼[1,2] 

机构地区：[1]宜春学院物理与工程技术学院,江西宜春336000 [2]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《无线电通信技术》2011年第1期50-52,共3页Radio Communications Technology

基　　金：广西青年科学基金资助项目(0640066)

摘　　要：提出了基于IEEE802.16d标准的当信道的响应大于循环前缀(CP)时一种简易的信道估计算法。利用系统前导的特殊时域结构,在不增加系统实现复杂度的基础上就可以很好地消除由于循环前缀不足而带来的ICI和ISI的干扰。仿真结果表明该方法可以满足IEEE802.16d在高速非视距环境下对信道估计的性能要求,该研究结果对高传输速率的信道信息估计有较大的参考价值。A simple channel estimation is presented based on IEEE802.16d standard in the case that the channel impulse response is longer than the cyclic prefix （CP）. By using the preamble special time-domain configuration, we can efficiently remove interference of ISI and ICI caused by insufficient CP, without increasing any computational complexity. The simulation results show that the performance of proposed method can satisfy the requirement of IEEE802.16d in the none-line-of-sight environment with the highest data transmission rate. Several results have theoretic reference values to information estimation of channel with high transmission rate.

关 键 词：IEEE802.16D 正交频分复用(OFDM) 信道估计 循环前缀 

分 类 号：TN911.5[电子电信—通信与信息系统]