A Dual-Hop Virtual MIMO Architecture Based on Hybrid Differential Spatial Modulation
A Dual-Hop Virtual MIMO Architecture Based on Hybrid Differential Spatial Modulation
复制标题
DOI：
10.1109/twc.2016.2583423
复制
发表时间：
2016-09
影响因子：
10.4
通讯作者：
Meng Zhang;Miaowen Wen;Xiang Cheng;Liuqing Yang
中科院分区：
文献类型：
--
作者：
Meng Zhang;Miaowen Wen;Xiang Cheng;Liuqing Yang
在本文中，我们提出了一种新的虚拟多输入多输出（VMIMO）架构，通过多个中继节点（RN）将信息从源节点（SN）传递到目的节点（DN）。由于它是建立在差分空间调制（DSM）的双跳网络上，我们称之为双跳混合DSM（DH-HDSM）。为了收获SN提供的分集并降低RN处的复杂度，DH-HDSM在第一跳中形成预编码辅助DSM模式，并在RN处以集中式或分布式方式应用非相干检测。基于解码和转发协议，DSM传输在第二跳中进行，并通过在任何时刻统计单个RN激活来实现高能量效率。我们分析了DH-HDSM的平均误比特率方面的性能，并与双跳混合空间调制（DH-HSM）和差分VMIMO系统，无论是一个单一的中继或最佳中继选择进行比较。理论分析和Monte Carlo仿真结果表明，当DN采用多天线时，DH-HDSM的误码性能优于DH-HSM和其他差分中继方案。
In this paper, we propose a novel virtual multi-input-multi-output (VMIMO) architecture to convey information from the source node (SN) to the destination node (DN) via multiple relay nodes (RNs). As it is built on dual-hop networks with differential spatial modulation (DSM), we call it dual-hop hybrid DSM (DH-HDSM). In order to harvest the diversity provided by the SN and reduce the complexity at the RNs, DH-HDSM forms a precoding aided DSM pattern in the first hop and applies incoherent detection in a centralized or distributed manner at the RNs. Based on the decode-and-forward protocol, DSM transmission is carried out in the second hop and achieves high energy efficiency via statistical single RN activation at any time instant. We analyze the performance of DH-HDSM in terms of the average bit error probability and make comparisons with dual-hop hybrid spatial modulation (DH-HSM) and differential VMIMO systems with either a single relay or best relay selection. Theoretical results and Monte Carlo simulations confirm that DH-HDSM outperforms DH-HSM and other differential relay schemes in terms of error performance when the DN is equipped with multiple antennas.