Carrier frequency offsets estimation for distributed MIMO system based on SOMP method

Yanyan HUANG; Hua PENG

doi:10.11959/j.issn.1000-436x.2018142

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Carrier frequency offsets estimation for distributed MIMO system based on SOMP method

Papers | 更新时间：2024-06-05

- Carrier frequency offsets estimation for distributed MIMO system based on SOMP method
- Journal on Communications Vol. 39, Issue 8, Pages: 133-139(2018)
- 作者机构：
  
  信息工程大学信息系统工程学院，河南郑州 450002
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61401511)
- DOI：10.11959/j.issn.1000-436x.2018142
  CLC： TN911.7
- Online First：2018-08，
  
  Published：25 August 2018
- 稿件说明：
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Yanyan HUANG, Hua PENG. Carrier frequency offsets estimation for distributed MIMO system based on SOMP method[J]. Journal on Communications, 2018, 39(8): 133-139.
DOI：

Yanyan HUANG, Hua PENG. Carrier frequency offsets estimation for distributed MIMO system based on SOMP method[J]. Journal on Communications, 2018, 39(8): 133-139. DOI： 10.11959/j.issn.1000-436x.2018142.

摘要

首先根据高阶循环累积量的半不变性重新推导了信号和高阶循环累积量之间的关系式，然后利用SOMP方法联合重构出多个接收天线信号的高阶循环累积量，最后通过主要非零高阶循环累积量对应的循环频率和频偏的四倍关系，得到多个发送信号的频偏估计。与现有算法相比，所提算法充分利用接收信号间的相关性，提高了低信噪比下的多频偏估计性能，降低了导频数量。

Abstract

By utilizing the half invariant property of high-order cyclic cumulants

the equation of signals and its high-order cyclic cumulants was rederivated first.Then simultaneous orthogonal matching pursuit (SOMP) method was used to jointly reconstruct multiple receiving signals’ high-order cyclic cumulants.At last

according to the fourfold relationship between carrier frequency offsets and cyclic frequencies of main non-zeros high-order cyclic cumulants

multiple transmitting signals’ carrier frequency offsets were obtained.Comparing with existing algorithms

the correlation between receiving signals is fully used by the proposed algorithm

the carrier frequency offset estimation performance at low signal to noise is improved and the pilots numbers are reduced.

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Keywords

references

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