Improved channel estimation method for OFDM/OQAM system

被引：0
|
作者：
Liu Y. [1 ]
Chen X. [1 ]
Zhao Y. [1 ]
机构：
[1] Air and Missile Defense College, Air Force Engineering University, Xi'an
来源：
Guofang Keji Daxue Xuebao/Journal of National University of Defense Technology | 2021年 / 43卷 / 01期
关键词：
Channel estimation; Pre-decision; Pseudo pilot power; Spectral efficiency;
D O I：
10.11887/j.cn.202101010
中图分类号：
学科分类号：
摘要：
In the OFDM/OQAM system, higher pseudo pilot power means more accurate channel estimation. According to this principle, an effective channel estimation method based on the improved preamble structure with higher pseudo pilot power was proposed. On the basis of the previous preamble structure, the preamble structure with highest power was improved and its channel estimation method was proposed. Because of the lack of enough prior knowledge of receipt signal, the channel is unable to be estimated. The pre-decision method was utilized to solve this problem. The error caused by the pre-decision was reduced through iteration, thus the estimation accuracy was improved. Simulation results prove that the proposed preamble structure shows better channel estimation performance and higher spectral efficiency. © 2021, NUDT Press. All right reserved.
引用
收藏
页码：72 / 78
页数：6
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