Massive MIMO Channel Estimation Algorithm Based onWeighted Compressed Sensing


Zhiguo Lv, Weijing Wang, Journal of Information Processing Systems Vol. 17, No. 6, pp. 1083-1096, Dec. 2021  

10.3745/JIPS.03.0168
Keywords: channel estimation, Compressed sensing, Matching Pursuit, Sparse Reconstruction
Fulltext:

Abstract

Compressed sensing-based matching pursuit algorithms can estimate the sparse channel of massive multiple input multiple-output systems with short pilot sequences. Although they have the advantages of low computational complexity and low pilot overhead, their accuracy remains insufficient. Simply multiplying the weight value and the estimated channel obtained in different iterations can only improve the accuracy of channel estimation under conditions of low signal-to-noise ratio (SNR), whereas it degrades accuracy under conditions of high SNR. To address this issue, an improved weighted matching pursuit algorithm is proposed, which obtains a suitable weight value uop by training the channel data. The step of the weight value increasing with successive iterations is calculated according to the sparsity of the channel and uop. Adjusting the weight value adaptively over the iterations can further improve the accuracy of estimation. The results of simulations conducted to evaluate the proposed algorithm show that it exhibits improved performance in terms of accuracy compared to previous methods under conditions of both high and low SNR.


Statistics
Show / Hide Statistics

Statistics (Cumulative Counts from November 1st, 2017)
Multiple requests among the same browser session are counted as one view.
If you mouse over a chart, the values of data points will be shown.




Cite this article
[APA Style]
Zhiguo Lv and Weijing Wang (2021). Massive MIMO Channel Estimation Algorithm Based onWeighted Compressed Sensing. Journal of Information Processing Systems, 17(6), 1083-1096. DOI: 10.3745/JIPS.03.0168.

[IEEE Style]
Z. Lv and W. Wang, "Massive MIMO Channel Estimation Algorithm Based onWeighted Compressed Sensing," Journal of Information Processing Systems, vol. 17, no. 6, pp. 1083-1096, 2021. DOI: 10.3745/JIPS.03.0168.

[ACM Style]
Zhiguo Lv and Weijing Wang. 2021. Massive MIMO Channel Estimation Algorithm Based onWeighted Compressed Sensing. Journal of Information Processing Systems, 17, 6, (2021), 1083-1096. DOI: 10.3745/JIPS.03.0168.