论文标题
LMMSE处理无线电条纹和MRC Fronthaul的无细胞大规模MIMO
LMMSE Processing for Cell-free Massive MIMO with Radio Stripes and MRC Fronthaul
论文作者
论文摘要
无细胞的大型MIMO为多个用户提供无处不在的连接，并且使用无线电条纹实施非常有效。与大规模的MIMO相比，主要成本包括领先的开销和AP硬件。最大比率组合（MRC）实现了低的领前负载和低成本AP，但性能不佳。这封信建议使用MRC Fronthaul设计实现准LMMSE（Q-LMMSE）处理。 Q-LMMSE源自标准LMMSE，该标准LMMSE通过单数值分解从MRC信号获得干扰信息。模拟结果表明，使用同一MRC Fronthaul，提出的Q-LMMSE增加了几次光谱效率。
Cell-free massive MIMO provides ubiquitous connectivity for multiple users, and implementation using radio stripes is very efficient. Compared with collocated massive MIMO, the major cost includes fronthaul overheads and AP hardware. Maximum ratio combination (MRC) achieves a low fronthaul loading and low-cost AP, but the performance is bad. This letter proposes to implement a quasi-LMMSE (Q-LMMSE) processing using MRC fronthaul design. Q-LMMSE is derived from a standard LMMSE, which gains interference information from MRC signal via singular value decomposition. Simulation results show that the proposed Q-LMMSE increases the spectral efficiency by several times using same MRC fronthaul.
