A Layered Spatial Modulation Algorithm Based on Amplitude/Phase-Shift Keying

被引：0
|
作者：
Li Y. [1 ]
Wang L. [1 ]
Wang Z. [1 ]
机构：
[1] School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an
来源：
Li, Yunfeng | 2018年 / Xi'an Jiaotong University卷 / 52期
关键词：
Multiple-input multiple-output; Phase-shift keying; Spatial modulation; Spectral efficiency;
D O I：
10.7652/xjtuxb201808018
中图分类号：
学科分类号：
摘要：
A high rate layered spatial modulation algorithm based on amplitude/phase-shift keying (APSK), called layered spatial modulation (LSM), is presented to improve the spectral efficiency of spatial modulation (SM). The new scheme firstly layers the transmit antennas, then the SM mapping is carried out for each layer of the transmit antennas. According to the mapping of each layer, all the active transmit antennas and the modulated symbols can be obtained. In order to further minimize the bit error rate of the system, a simple and efficient ring of the amplitude levels optimization algorithm is proposed. Moreover, a low-complexity detection scheme is proposed to detect the active antenna indexes and the modulated symbols separately to reduce the decoding complexity effectively at the receiver. Simulation results show that the LSM algorithm is suitable for any number of active antennas, and the active antennas can be adjusted flexibly. Compared with the layered space shift keying algorithm, when the spectrum efficiency is 8 b/(s·Hz), the performance of the two algorithms is almost the same, but the LSM algorithm can save twelve antennas and hardware resources. And, compared with the generalized spatial modulation, when the number of transmit antenna is three, five or six, the LSM algorithm can improve the spectrum efficiency by 1 b/(s·Hz). © 2018, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：117 / 123
页数：6
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