Iterative Detection and Decoding With Log-Likelihood Ratio Based Access Point Selection for Cell-Free MIMO Systems

被引：1
|
作者：
Di Renna, Roberto B. [1 ]
de Lamare, Rodrigo C. [1 ]
机构：
[1] Pontif Catholic Univ Rio Janeiro, BR-22453900 Rio De Janeiro, Brazil
来源：
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2024年 / 73卷 / 05期
关键词：
Symbols; Iterative decoding; Channel estimation; Central Processing Unit; Fading channels; Interference; Decoding; Cell-free massive MIMO; iterative detection and decoding (IDD); log-likelihood-ratio processing; access point selection; FREE MASSIVE MIMO; POWER ALLOCATION;
D O I：
10.1109/TVT.2023.3347097
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes an iterative detection and decoding (IDD) scheme and an approach to improve the selection of access points (APs) in uplink cell-free massive multiple-antenna systems. A cost-effective scheme for selection of APs based on local log-likelihood ratios (LLRs) is developed that provides sufficient statistics to the central processing unit and selects which APs should be considered for each user. Numerical results show that the proposed IDD scheme works very well and the proposed LLRs-based approach to select APs outperforms the existing techniques in terms of bit error rate and spectral efficiency while requiring a comparable fronthaul load.
引用
收藏
页码：7418 / 7423
页数：6
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