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重庆邮电大学 通信与信息工程学院,重庆 400065
李贵勇(1971-),男,重庆人。正高级工程师,硕士,主要研究方向为移动通信技术。
李平安(1997-),硕士。E-mail:2802873812@qq.com
纸质出版日期:2021-08-10,
收稿日期:2020-11-24,
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李贵勇, 李平安, 李贺宾. 基于IR的部分相干信道估计算法[J]. 光通信研究, 2021,(4):10-14.
LI Gui-yong, LI Ping-an, LI He-bin. Partially Coherent Channel Estimation Algorithm based on IR[J]. Study on Optical Communications, 2021,(4):10-14.
李贵勇, 李平安, 李贺宾. 基于IR的部分相干信道估计算法[J]. 光通信研究, 2021,(4):10-14. DOI: 10.13756/j.gtxyj.2021.04.003.
LI Gui-yong, LI Ping-an, LI He-bin. Partially Coherent Channel Estimation Algorithm based on IR[J]. Study on Optical Communications, 2021,(4):10-14. DOI: 10.13756/j.gtxyj.2021.04.003.
对于具有混合预编码的毫米波大规模多输入多输出(MIMO)系统,由于系统中硬件的缺陷会在接收的导频中引入随机相位偏移,这将使得传统信道估计算法的性能变得非常差,甚至不能估计出信道信息。为了解决这个问题,文章利用来自不同射频链的导频,在同一时间段内具有相同的相位偏移,而在不同时间段具有不同的相位偏移的特性,提出了基于迭代重加权(IR)的部分相干压缩相位提取(PC-CPR)(IR-PC-CPR)算法。该算法首先对接收的相干导频做相位偏移补偿,然后再使用IR算法估计信道参数来实现高精度的信道估计。仿真结果表明,文章所提算法与PC-CPR算法相比具有更好的性能。
For millimeter-wave large-scale Multiple-Input Multiple-Output (MIMO) systems with hybrid precoding
due to the hardware defects in the system
random phase shifts will be introduced in the received pilots
which will make the performance of traditional channel estimation algorithms become very poor. In some extreme conditions
even the channel information cannot be estimated. In order to solve this problem
this paper uses pilots from different radio frequency chains to have the same phase offset in the same time period
and pilots in different time periods have different phase offset characteristics to estimate the channel information with an Iterative Reweight (IR) based Partially Coherent-Compressive Phase Retrieval (PC-CPR) (IR-PC-CPR) algorithm. The algorithm first performs phase offset compensation on the received coherent pilots
and then uses an iterative reweight (IR) algorithm to estimate channel parameters to achieve high-precision channel estimation. The simulation results show that the algorithm proposed in this paper has better performance than the PC-CPR algorithm.
毫米波混合预编码压缩相位提取迭代重加权
millimeter wavehybrid precodingCPRIR
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