基于正交时频空间调制的通信感知一体化系统的公平性功率分配方案

doi:10.11959/j.issn.1000-0801.2022256

Abstract

Abstract:

By sharing resources for radar sensing and communications, integrated sensing and communication (ISAC) has promising applications in diverse scenarios, such as human-machine interface, vehicle-to-everything (V2X), remote sensing, and environment surveillance.In order to resolve the frequency resource conflict in high-speed V2X networks, based on the modulation orthogonal time frequency (OTFS), the OTFS-ISAC system was proposed, where the base station receives reflected echoes to obtain sensing parameters of vehicle motion and then establish the vehicle’s mobile topology.Additionally, in terms of the multi-vehicle network, the design of OTFS-ISAC with NOMAsatisfying the fairness and the algorithm of power allocation were proposed.Simulations show that compared with the NOMA without radar sensing system, the proposed design improves the system data rate by 25%.

Key words: integrated sensing and communication, orthogonal time frequency space modulation, vehicle-to-everything

CLC Number:

TP393

Ke XU, Luping XIANG, Jie HU, Kun YANG. Power allocation satisfying user fairness for integrated sensing and communication system based on orthogonal time frequency space modulation[J]. Telecommunications Science, 2022, 38(9): 50-59.

Figures/Tables 9

References 27

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参数名称	变量名	参数值
发射功率/W	P_t	1
天线发送、接收增益/dB	G _t、G_r	0、0
载波频率/GHz	f_c	5
OTFS多普勒维度	k	1 024
OTFS时延维度	l	1 024
OTFS符号持续时间/ms	T_otfs	3.75
OFDM载波间隔/kHz	Δf	270
OFDM符号持续时间/μs	T_ofdm	3.67
OFDM载波数	M	1 024
OFDM时隙数	N	1 024
基站和车辆距离/m	d	0~15
普通NOMA上行开销	η	30%
导频开销	[M₀,N₀]	[60,30]

Power allocation satisfying user fairness for integrated sensing and communication system based on orthogonal time frequency space modulation

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