摘要
结合IEEE 802.16d(e)协议的相关内容,针对多天线载波分配和导频的排列方式,提出了一种简单的性能和复杂度折衷的导频信道估计算法,该算法是通过利用LS算法求得导频位置的信道估计,然后对导频信道估计进行滤波、插值来得到数据位置的信道估计。性能仿真显示,这种复杂度很低的算法BER性能损失是可以接受的,而且802.16标准规定系统导频只能用1个symbol,因此这种方法有其实用价值。
In this paper the pilot-aided channel estimation algorithm with the traed-off of performance and complexity is proposed according to the multi-carrier distribution and arrangement of the pilot in IEEE 802.16d（e） protocols. The method, based on LS algorithm and by is simple achieving channel estimation at pilot location, and then by filtering the pilot channel estimation and interpolation, realyzes the data channel estimation. Simulation shows that the algorithm is very low in complexity and the loss of its BER performance is acceptable. And the system pilot for 802.16 protocols can only be a symbol, so this method is of actual value.
出处
《通信技术》
2008年第7期63-65,共3页
Communications Technology
基金
国家自然科学基金资助项目(编号:60772163)
