典型文献
Capacity Analysis and Sum Rate Maximization for the SCMA Cellular Network Coexisting with D2D Communications
文献摘要：
Sparse code multiple access(SCMA)is the most concerning scheme among non-orthogonal multiple access(NOMA)technologies for 5G wireless communication new interface.Another efficient tech-nique in 5G aimed to improve spectral efficiency for local communications is device-to-device(D2D)com-munications.Therefore,we utilize the SCMA cellular network coexisting with D2D communications for the connection demand of the Internet of things(IOT),and improve the system sum rate performance of the hy-brid network.We first derive the information-theoretic expression of the capacity for all users and find the capacity bound of cellular users based on the mutual interference between cellular users and D2D users.Then we consider the power optimization problem for the cellular users and D2D users jointly to maximize the system sum rate.To tackle the non-convex opti-mization problem,we propose a geometric program-ming(GP)based iterative power allocation algorithm.Simulation results demonstrate that the proposed al-gorithm converges fast and well improves the sum rate performance.
文献关键词：
中图分类号：
作者姓名：
Yukai Liu;Wen Chen
作者机构：
Shanghai Institute of Advanced Communications and Data Sciences,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
文献出处：
引用格式：
[1]Yukai Liu;Wen Chen-.Capacity Analysis and Sum Rate Maximization for the SCMA Cellular Network Coexisting with D2D Communications)[J].中国通信（英文版）,2022(10):55-68
A类：
B类：
Capacity,Analysis,Sum,Rate,Maximization,SCMA,Cellular,Network,Coexisting,D2D,Communications,Sparse,code,multiple,access,most,concerning,scheme,among,orthogonal,NOMA,technologies,wireless,new,interface,Another,efficient,nique,aimed,spectral,efficiency,local,communications,device,Therefore,utilize,cellular,network,coexisting,connection,demand,Internet,things,IOT,system,sum,performance,hy,brid,We,first,derive,information,theoretic,expression,capacity,users,find,bound,mutual,interference,between,Then,consider,power,optimization,problem,jointly,maximize,To,tackle,convex,geometric,program,ming,GP,iterative,allocation,algorithm,Simulation,results,demonstrate,that,proposed,converges,fast,well,improves
AB值：
0.574807
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