An improvedscheme of multiple-mode OFDM with index modulation

被引：0

作者：

Zhuang L. ^{[1
]}

Liu S. ^{[1
]}

Wang G. ^{[1
]}

Dai L. ^{[1
]}

机构：

[1] School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2019年 / 47卷 / 06期

关键词：

Energy efficiency; Index modulation; Maximum likelihood detection; Orthogonal frequency division multiplexing; Spectral efficiency;

D O I：

10.13245/j.hust.190605

中图分类号：

学科分类号：

摘要：

To improve the energy efficiency of the multiple-mode orthogonal frequency division multiplexing withindex modulation (MM-OFDM-IM), an improved scheme and corresponding detection algorithm were proposed. The scheme transmits part of the information through no-load mode without consuming energy. By changing the ratio of no-load mode to other modes, a tradeoff between energy efficiency and spectral efficiencycan be achieved. The effect of the no-load mode on the bit error rateperformance was analyzed, and the multi-mode constellation after adding no-load mode was optimizedaccordingly. In addition, an improved low complexity maximum likelihood detection(LC-MLD) algorithm was proposed to further reduce the detection complexity ofmultiple-mode scheme without reducing the spectral efficiency performance. Simulation results show that in the Rayleigh fading channel, when bit error rateis 1×10-5, spectral efficiency is 1.75, 2.00, 3.00 or 4.00 bit/s/Hz, the proposed scheme achieves signal-to-noise ratiogains of about 6.0, 3.7, 3.4 and 1.7 dB, respectively. © 2019, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：23 / 29

页数：6

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