arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2008.10520eess.SP
收藏

量化大规模多输入多输出系统的随机混合合并设计

Stochastic Hybrid Combining Design for Quantized Massive MIMO Systems

Yalin Wang, Xihan Chen, Yunlong Cai, Lajos Hanzo

摘要:

通过在接收机处使用低分辨率模数转换器(LADC),可以显著降低大规模多输入多输出(mMIMO)系统的功耗和成本。然而,LADC的粗量化和不准确的瞬时信道状态信息(ICSI)都降低了量化mMIMO系统的性能。为了克服这些挑战,我们提出了一种新的随机混合模拟-数字组合器(SHC)的计划,适应混合组合器的长期统计的信道状态信息(SCSI)。我们寻求最小化的发射功率,共同优化的SHC平均速率约束。为了解决由此产生的非凸随机优化问题,我们发展了一个松弛随机逐次凸逼近(RSSCA)算法。进行模拟,以确认我们所提出的计划的好处超过基准。

英文摘要:

Both the power-dissipation and cost of massive multiple-input multiple-output (mMIMO) systems may be substantially reduced by using low-resolution analog-to-digital converters (LADCs) at the receivers. However, both the coarse quantization of LADCs and the inaccurate instantaneous channel state information (ICSI) degrade the performance of quantized mMIMO systems. To overcome these challenges, we propose a novel stochastic hybrid analog-digital combiner (SHC) scheme for adapting the hybrid combiner to the long-term statistics of the channel state information (SCSI). We seek to minimize the transmit power by jointly optimizing the SHC subject to average rate constraints. For the sake of solving the resultant nonconvex stochastic optimization problem, we develop a relaxed stochastic successive convex approximation (RSSCA) algorithm. Simulations are carried out to confirm the benefits of our proposed scheme over the benchmarkers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑