Scholarlink

<p>In this paper, we analyze and compare two classical spatial modulation (SM) schemes in downlink multiuser multiple-input–multiple-output (MU-MIMO) system, namely Receive SM (RSM) and Parallel SM (PSM). The RSM scheme premises on zero-forcing (ZF) based multiuser downlink beamforming to activate single receiving antenna at each remote user terminal (UT) while simultaneously mitigate multiuser interference (MUI). Alternatively, the antenna array at the base station transmitter (BSTx) of the PSM scheme is separated into several subarrays with each subarray dedicated to a specific UT. At the transmission instant, one antenna in each subarray is activated to send data and the index of the activated antenna itself conveys information. Performance metrics in terms of system throughput (transmitted bits per channel use (bpcu)), complexity and the overall symbol error rate (SER) are comprehensively analyzed and extensive computer simulations are carried out in various scenarios. It is demonstrated that in general scenarios, PSM outperforms the RSM scheme not only in SER but also in complexity and system throughput.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Performance comparison of PSM and RSM schemes for multiuser downlink MIMO system

  • 期刊论文

  • 发表日期：

    2025年9月24日

查看全文
  • Gan-Lin Chen,
  • Wei-Chiang Wu,
  • Ahmad Johari Bin Sihes,
  • Xi-Hua Chen

摘要

In this paper, we analyze and compare two classical spatial modulation (SM) schemes in downlink multiuser multiple-input–multiple-output (MU-MIMO) system, namely Receive SM (RSM) and Parallel SM (PSM). The RSM scheme premises on zero-forcing (ZF) based multiuser downlink beamforming to activate single receiving antenna at each remote user terminal (UT) while simultaneously mitigate multiuser interference (MUI). Alternatively, the antenna array at the base station transmitter (BSTx) of the PSM scheme is separated into several subarrays with each subarray dedicated to a specific UT. At the transmission instant, one antenna in each subarray is activated to send data and the index of the activated antenna itself conveys information. Performance metrics in terms of system throughput (transmitted bits per channel use (bpcu)), complexity and the overall symbol error rate (SER) are comprehensively analyzed and extensive computer simulations are carried out in various scenarios. It is demonstrated that in general scenarios, PSM outperforms the RSM scheme not only in SER but also in complexity and system throughput.