High Dimensional Differential Optical Spatial Modulation with High Spectrum Efficiency

doi:10.3788/AOS202242.0106004

	High Dimensional Differential Optical Spatial Modulation with High Spectrum Efficiency
	Wang, Huiqin 1; Mao, Yicong 1; R., Huang ; Q., Peng ; M., Cao
刊名	Guangxue Xuebao/Acta Optica Sinica
	2022-01-10
卷号	42 期号:1
关键词	Channel state information Digital television Energy efficiency Errors Light modulation Maximum likelihood Optical communication Optical signal processing Pulse amplitude modulation Pulse position modulation Signal detection Signal to noise ratio Bit-error rate Channel-state information Detection algorithm Differential optical spatial modulation High-dimensional Higher-dimensional Modulation schemes Pulse-position modulation Spatial time signal Spectra efficiency
ISSN号	0253-2239
DOI	10.3788/AOS202242.0106004
英文摘要	In order to effectively solve the problem of suboptimal spectrum efficiency of a differential optical spatial modulation scheme (DOSM), a high-dimensional DOSM (HD-DOSM) including spatial, time, and digital signal domains is proposed by using pulse position modulation (PPM) with high energy efficiency and pulse amplitude modulation (PAM) with high spectrum efficiency to construct the space-time dispersion matrix which satisfies the differential process. After the differential coding principle is introduced in detail, the upper bound of the theoretical bit error rate of HD-DOSM is deduced, and its performance is compared with the DOSM system. The results show that the proposed scheme achieves a compromise between spectrum efficiency and error performance. When the spectrum efficiency is 1 bit•s-1•Hz-1 and the bit error rate is 1×10-3, the signal-to-noise ratio (SNR) of HD-DOSM is improved by about 2 dB, compared with DOSM based on PAM. Meanwhile, the transmission rate of HD-DOSM improves by 2 bpcu (bit per channel use). Based on the sparsity of the transmitted signals, a stepwise detection algorithm is proposed to detect PPM symbols first, which effectively reduces the computational complexity of the decoding algorithm at the receiver. When the PPM order is 4, the complexity of the proposed scheme is reduced by about 75% compared with the maximum likelihood detection algorithm. © 2022, Chinese Lasers Press. All right reserved.
WOS研究方向	Optics
语种	中文
出版者	Chinese Optical Society
WOS记录号	WOS:000828234000007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159081]
专题	计算机与通信学院
作者单位	1.School of Computer and Communication, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Huiqin,Mao, Yicong,R., Huang,et al. High Dimensional Differential Optical Spatial Modulation with High Spectrum Efficiency[J]. Guangxue Xuebao/Acta Optica Sinica,2022,42(1).
APA	Wang, Huiqin,Mao, Yicong,R., Huang,Q., Peng,&M., Cao.(2022).High Dimensional Differential Optical Spatial Modulation with High Spectrum Efficiency.Guangxue Xuebao/Acta Optica Sinica,42(1).
MLA	Wang, Huiqin,et al."High Dimensional Differential Optical Spatial Modulation with High Spectrum Efficiency".Guangxue Xuebao/Acta Optica Sinica 42.1(2022).