论文标题
使用LDPC代码的迭代检测和解码用于无细胞的大型多源MIMO
Iterative Detection and Decoding for Cell-Free Massive Multiuser MIMO with LDPC Codes
论文作者
论文摘要
本文提出了一个迭代检测和解码（IDD）方案，该方案是无细胞的大量多重输入多重输出（CF-MMIMO）系统。用户将编码的数据发送到访问点（AP），该数据在中央处理单元（CPU）共同检测到。这些符号以对数似然比（LLRS）的形式进行迭代交换，而检测器和低密度奇偶校验检查代码（LPDC）解码器则增加了编码系统的性能。我们提出了一个基于列表的多反馈多样性，并连续干扰取消（MF-SIC），以提高CF-MMIMO的性能。此外，将提出的检测器与平行干扰取消（PIC）和MF-PIC方案进行了比较。最后，将CF-MMIMO的位错误率（BER）与共同存在的MMIMO（COL-MMIMO）进行了比较。
This paper proposes an iterative detection and decoding (IDD) scheme for a cell free massive multiple input multiple output (CF-mMIMO) system. Users send coded data to the access points (APs), which is jointly detected at central processing unit (CPU). The symbols are exchanged iteratively in the form of log likelihood ratios (LLRs) between the detector and the low-density parity check codes (LPDC) decoder, increasing the coded system's performance. We propose a list-based multi-feedback diversity with successive interference cancellation (MF-SIC) to improve the performance of the CF-mMIMO. Furthermore, the proposed detector is compared with the parallel interference cancellation (PIC) and MF-PIC schemes. Finally, the bit error rate (BER) performance of CF-mMIMO is compared with the co-located mMIMO (Col-mMIMO).
