Layered Space Shift Keying Modulation Over MIMO Channels

被引:17
|
作者
Fang, Shu [1 ]
Li, Lei [1 ]
Hu, Su [1 ]
Tang, Jianhua [2 ]
Yue, Zongdi [1 ]
Feng, Gang [1 ]
Pandharipande, Ashish [3 ]
机构
[1] Univ Elect Sci & Technol China, Dept Natl Key Lab Commun, Chengdu 611731, Peoples R China
[2] Singapore Univ Technol & Design, Singapore 487372, Singapore
[3] Philips Res High Tech Campus, NL-5656 AE Eindhoven, Netherlands
基金
美国国家科学基金会;
关键词
Detection complexity; layered space shift keying (LSSK) modulation; maximum likelihood (ML) detection; multiple-input multiple-output (MIMO); space shift keying (SSK) modulation; GENERALIZED SPATIAL MODULATION; ACTIVE TRANSMIT ANTENNAS; PERFORMANCE ANALYSIS; FADING CHANNELS; IMPLEMENTATION; DIVERSITY;
D O I
10.1109/TVT.2016.2539283
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Space shift keying (SSK) modulation is an emerging transmission technique for multiple-input multiple-output (MIMO) wireless channels, which exploits the spatial domain to convey information. In this paper, we present a layered space shift keying (LSSK) modulation scheme to fully exploit the spatial domain to transmit information bits, where a layered architecture is developed to achieve spatial multiplexing transmission in an SSK system. Specifically, LSSK leverages the rotated signals predetermined at the transceiver to identify different layers and improve thebit-error-rate (BER) performance. The layered signals are directly generated by the proposed LSSK modulation method with a low computational overhead. Furthermore, we propose a layered-and-joint (LJ) near-optimal detection algorithm based on the layered architecture of LSSK to reduce the detection complexity. In LJ detection, layered detection is performed to find a set of detection candidates for each layer, and then, joint detection is performed with these candidates. We show that the performance of LJ detection is quite close to that of optimal maximum-likelihooddetectionwith significantly reduced detection complexity for high-spectrum-efficiency scenarios. Results demonstrate that the proposed LSSK scheme substantially improves the spectrum efficiency of an SSK system and outperforms other existing MIMO schemes.
引用
收藏
页码:159 / 174
页数:16
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