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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。
According to the related content of IEEE 802.16d (e) protocol, a simple perceptual pilot channel estimation algorithm is proposed for multi-antenna carrier allocation and pilot arrangement. This algorithm is based on LS algorithm Pilot position channel estimation is obtained, and then the pilot channel estimation is filtered and interpolated to obtain the channel estimation of the data position. The performance simulation shows that BER performance loss of this less complex algorithm is acceptable, and the 802.16 standard provides only one symbol for system pilots, so this method has its practical value.