Achievable Rates for Massive MIMO Relaying Systems With Variable-Bit ADCs/DACs

被引：9

作者：

Xiong, Youzhi ^{[1
]}

机构：

[1] Sichuan Normal Univ, Sch Phys & Elect Engn, Chengdu 610066, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2020年 / 24卷 / 05期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Relays; Quantization (signal); Massive MIMO; Nonlinear distortion; Fading channels; Covariance matrices; relaying systems; variable resolution ADCs; DACs;

D O I：

10.1109/LCOMM.2020.2971467

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Focusing on massive multiple-input and multiple-output (MIMO) relaying systems with variable resolution analog- to-digital converters (ADCs) and digital-to-analog converters (DACs), we derive the exact and approximate closed-form expressions for the achievable rate over Rayleigh fading channels. Numerical results reveal that the low-resolution DACs degrade the system performance much more than the low-resolution ADCs, and that the low-resolution ADCs and DACs achieve better energy efficiency. Moreover, provided that the total number of quantization bits is constrained, we find that the achievable rate is optimal when all ADCs and DACs adopt the same quantization bits from the perspective of statistic.

引用

页码：991 / 994

页数：4

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