基于Kapteyn级数展开的低复杂度大规模MIMO信道估计

doi:10.11959/j.issn.1000-0801.2016324

Abstract

Abstract:

In order to reduce the complexity of the massive MIMO channel estimation, a channel estimation method based on Kapteyn series expansion was proposed. By using Taylor series to expand the inversion, the complexity was greatly reduced. In order to improve the Taylor-MMSE estimation of the convergence rate, Kapteyn series was used to expand covariance matrix. The simulation result shows that the mean square error of Kapteyn-MMSE estimation converges faster than Taylor-MSME. It is insufficient that the complexity of Kapteyn-MMSE slightly higher than the complexity of Taylor-MMSE, but still far less than the complexity of classical MMSE algorithm.

Key words: channel estimation, Taylor series, Kapteyn series, polynomial expansion

Bing WANG,Zhengquan LI,Feng YAN,Lianfeng SHEN. Low-complexity channel estimation in massive MIMO based on Kaptyn series expansion[J]. Telecommunications Science, 2016, 32(12): 75-79.

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References 14

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信道估计器	计算复杂度
MMSE	O（B³N_r³）
Taylor-MMSE	O（LB²N_r²）
Kapteyn-MMSE	O（LK²B²N_r²）

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Low-complexity channel estimation in massive MIMO based on Kaptyn series expansion

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