高铁场景下联合天线与IOS单元选择的分布式IOS-SM传输方案

doi:10.11959/j.issn.1000-0801.2023092

Abstract

Abstract:

A distributed intelligent omni-surface (IOS) -assisted spatial modulation (SM) transmission scheme was proposed to address the problem of transmission rate degradation caused by the high signal penetration loss in closed carriages in the high-speed railway scenarios.Firstly, SM technology was utilized to ensure that the indexed information section was not affected by penetration loss.Then, to reduce the high path loss and power loss of the long-range IOS windows, the distributed IOS was selected by traversal algorithm according to the principle of maximizing the received signal-to-noise ratio, and the best IOS window was activated to transmit the SM modulated information.Finally, to reduce the impact of the missing direct view path gain on the overall system performance, the antenna removal principle and the sequential selection method were used to dynamically and selectively activate the receiving antenna and IOS unit under the power consumption model.The simulation results show that the proposed scheme is more suitable for the high-speed railway wireless communication scenario than the conventional relay-forwarding and reconfigurable intelligence surface -SM (RIS-SM) schemes.And with the power loss model, the distributed IOS-SM scheme chosen by the combined antenna and IOS unit is still able to guarantee high performance transmission of the system.

Key words: high speed railway wireless communication, intelligent omni-surface, spatial modulation

CLC Number:

TN929.5

Qingfeng DING, Song WANG. Distributed IOS-SM transmission scheme with joint antenna and IOS unit selection for high-speed railway scenario[J]. Telecommunications Science, 2023, 39(4): 31-42.

Figures/Tables 9

References 26

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分类	材质	损耗参考值/dB
车体	铁质	12～15
	不锈钢	20～24
	中控铝合金车体	14～16
车窗	透明玻璃	3.6～3.9
	有色玻璃	24.5～40

参数名称	符号	数值/mW	参数名称	符号	数值/mW
数模转换器功率	P_DAC	15	发射端滤波器功率	P_filt	2.5
模数转换器功率	P_ADC	6.7	接收端滤波器功率	P_filr	2.5
低噪声放大器功率	P_LNA	20	IOS硬件静态功率	P_static	0
中频放大器功率	P_IFA	4	IOS动态激活单元功率	P_dynamic	0.33
混频器的消耗功率	P_mix	30.3	系统功率传输效率	η	0.38（无量纲）

Distributed IOS-SM transmission scheme with joint antenna and IOS unit selection for high-speed railway scenario

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References 26

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