On the Performance of Distributed Antenna Array Systems With Quasi-Orthogonal Pilots

Anubhab Chowdhury,Pradip Sasmal,Chandra R. Murthy,Ribhu Chopra

IEEE Transactions on Vehicular Technology（2022）

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摘要

In this paper, we address the problem of channel estimation in a single cell massive multiple-input multiple-output (mMIMO) system with distributed antenna arrays (DAA) under the availability of limited pilots. Specifically, we propose to use pilots that are not only orthogonal within a cluster but also minimally correlated across clusters. We show that pilot sets that form mutually unbiased ortho...

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关键词

Contamination,Channel estimation,Antenna arrays,Resource management,Clustering algorithms,Indexes,Correlation

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