Amari Alpha Divergence-Based Channel Estimator for Pilot Contaminated Multicell MIMO System

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-11-06 DOI:10.1109/LCOMM.2024.3492280

Shekhar Pratap Singh;Parth Sharma;Pyari Mohan Pradhan

引用次数: 0

Abstract

The multiple input multiple output (MIMO) system deployed in multicell multiuser scenario suffers from pilot contamination due to interference. The contaminated pilot used in the channel estimation leads to inaccurate estimates of the channel. In this letter, a multicell multiuser channel estimation technique based on the Amari alpha divergence based LMS algorithm (AALMS) is proposed for MIMO system. The mean stability analysis has been carried out, and the upper bound on the step size parameter of the AALMS algorithm is derived. The steady state mean square deviation (MSD) analysis is also presented. Monte-carlo simulations have been carried out considering a Rayleigh fading channel. The simulation results show that the proposed scheme provides better estimates of the channel as indicated by the lower mean square error (MSE) and MSD.

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基于Amari Alpha散度的导频污染多小区MIMO系统信道估计

部署在多小区多用户场景下的多输入多输出（MIMO）系统由于干扰而受到导频污染的困扰。在信道估计中使用的受污染导频会导致信道估计不准确。针对MIMO系统，提出了一种基于Amari alpha散度LMS算法（AALMS）的多小区多用户信道估计技术。对该算法进行了平均稳定性分析，推导出了算法步长参数的上界。给出了稳态均方偏差（MSD）分析。在考虑瑞利衰落信道的情况下进行了蒙特卡罗仿真。仿真结果表明，该方案具有较低的均方误差（MSE）和MSD，能较好地估计信道。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.