Overlay CR-NOMA Assisted Intelligent Transportation System Networks with Imperfect SIC and CEEs  

作　　者：LI Xingwang GAO Xuesong LIU Yingting HUANG Gaojian ZENG Ming QIAO Dawei 

机构地区：[1]Physics and Electronic Information Engineering,Henan Polytechnic University,Jiaozuo 454003,China [2]School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China [3]State Grid Gansu Electric Power Research Institute,Lanzhou 730070,China [4]School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China [5]Department of Electrical and Computer Engineering,Laval University,Quebec City QC G1V 0A6,Canada [6]School of Emergency Management,Henan Polytechnic University,Jiaozuo 454003,China

出　　处：《Chinese Journal of Electronics》2023年第6期1258-1270,共13页电子学报（英文版）

基　　金：supported by the Key Project of Guizhou Science and Technology Support Program through Grant Guizhou Key Science and Support([2021]-001);the Doctoral Fund of Henan Polytechnic University(B2022-2);the National Natural Science Foundation of China(62171146,61861041);the Natural Science Foundation of Gansu Province of China(20JR5RA536,20JR10RA095);the Gansu Postdoctoral Research Funding Project。

摘　　要：With the development of the mobile communication and intelligent information technologies,the intelligent transportation systems driven by the sixth generation(6G)has many opportunities to achieve ultralow latency and higher data transmission rate.Nonetheless,it also faces the great challenges of spectral resource shortage and large-scale connection.To solve the above problems,non-orthogonal multiple access(NOMA)and cognitive radio(CR)technologies have been proposed.In this regard,we study the reliable and ergodic performance of CR-NOMA assisted intelligent transportation system networks in the presence of imperfect successive interference cancellation(SIC)and non-ideal channel state information.Specifically,the analytical expressions of the outage probability(OP)and ergodic sum rate(ESR)are derived through a string of calculations.In order to gain more insights,the asymptotic expressions for OP and ESR at high signal-to-noise ratio(SNR)regimes are discussed.We verify the accuracy of the analysis by Monte Carlo simulations,and the results show:i)Imperfect SIC and channel estimation errors(CEEs)have negative impacts on the OP and ESR;ii)The OP decreases with the SNR increasing until convergence to a fixed constant at high SNR regions;iii)The ESR increases with increasing SNR and there exists a ceiling in the high SNR region.

关 键 词：Cognitive radio network Ergodic rate Imperfect successive interference cancellation Nonorthogonal multiple access Outage probability 

分 类 号：U495[交通运输工程—交通运输规划与管理] TN929.5[交通运输工程—道路与铁道工程]