Uplink Cell-Free Massive MIMO URLLC Systems with User Mobility and Imperfect CSI

被引：3

作者：

Kurma, Sravani ^{[1
]}

Singh, Keshav ^{[1
]}

Sharma, Prabhat Kumar ^{[2
]}

Li, Chih-Peng ^{[1
]}

Tsiftsis, Theodoros A. ^{[3
]}

机构：

[1] Natl Sun Yat Sen Univ, Inst Commun Engn, Kaohsiung 80424, Taiwan

[2] Visvesvaraya Natl Inst Technol, Dept ECE, Nagpur, Maharashtra, India

[3] Univ Thessaly, Dept Informat & Telecommun, Lamia, Greece

来源：

ICC 2023-IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS | 2023年

关键词：

Cell-free massive multiple-input and multiple-output; outage probability; user mobility; Doppler power spectra models; imperfect channel state information;

D O I：

10.1109/ICC45041.2023.10279490

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

The cell-free massive multiple-input and multiple-output (CF-mMIMO) communication technology has the ability to handle inter-cell interference in MIMO systems, making it a potential candidate for sixth-generation (6G) wireless communication. A CF-mMIMO system is investigated in this paper for mission-critical ultra-reliable low latency communication (URLLC) applications involving a central processing unit (CPU), many distributed access points (APs), each with multiple antennas, and multiple single-antenna user equipment (UEs). In order to maximize energy efficiency (EE) and throughput gains, each AP is linked to the CPU through a fronthaul link with limited capacity, which handles the quantized uplink data to the CPU. We assume that each AP serves fewer UEs. Our approach has a minimal signal processing complexity and offers UEs uniform quality of service (QoS) as well as improved EE. Closed-form expression for outage probability (OP) in the uplink of the CF-mMIMO system considering Welch-Satterthwaite approximation is derived using a variety of Doppler power spectra (DPS) models that consider imperfect channel state information (CSI) and mobility of UEs. Our numerical simulations validate the correctness of the derived expressions.

引用

页码：4317 / 4322

页数：6

共 20 条

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