摘要
为了解决广义空间调制(GSM)系统中存在的信道间干扰和天线组合间的高相关性问题,提出了一种名为联合多天线选择进行映射的广义空间调制(JAS-GSM)方案。基于最小汉明距离最大化准则,设计了一种低复杂度的发射天线组合(TAC)优化算法,旨在降低天线间的相关性和计算复杂度。同时,利用优化后TAC的冗余特性,使所有TAC均参与码本映射,并基于最小欧式距离最大化准则设计了高效的联合映射码本筛选算法,以进一步提高系统的误码率性能。通过推导JAS-GSM方案的平均误码率理论边界公式,验证了仿真实验结果的准确性,并完成了辅助联合映射码本筛选算法的设计。仿真实验结果表明,与现有的天线选择方案和GSM变体调制方案相比,所提JAS-GSM方案具有更低的计算复杂度和更高的传输可靠性。
A novel modulation scheme called joint multi-antenna selection mapping generalized space modulation(JAS-CSM)is proposed to solve the problems of inter-channel interference and high correlation between antennas in generalized spatial modulation(GSM)systems.A low complexity transmit antenna combination(TAC)optimization algorithm is designed to reduce inter-antenna correlation and computational complexity based on the maximizing minimum hamming distance criterion.At the same time,all antenna combinations participate in the joint mapping of the codebook by using the redundant characteristics of the optimized TAC,and an efficient screening algorithm for the joint mapping codebook is designed based on the maximizing minimum euclidean distance criterion to improve bit error rate performance further.By deriving the theoretical boundary formula of the bit error rate of the JAS-GSM scheme,the correctness of the simulation results is verified,and the joint mapping codebook screening algorithm design is assisted.Simulation results show that the proposed JAS-GSM scheme has lower computational complexity and higher transmission reliability than existing antenna selection schemes and GSM variant modulation schemes.
作者
冯宇
李兴池
吴震
金小萍
FENG Yu;LI Xingchi;WU Zhen;JJIN Xiaoping(Zhejiang Shannon Communication Technology Company Limited,Lishui 323050,China;Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province,China Jiliang University,Hangzhou 310018,China)
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2023年第5期22-27,59,共7页
Journal of Beijing University of Posts and Telecommunications
基金
国家级大学生创新创业训练计划项目(202210356005)
浙江省自然科学基金项目(LY17F010012)
浙江省教育厅研究项目(Y201840047)。
关键词
广义空间调制
天线选择
发射天线组合
误码率
generalized spatial modulation
antenna selection
transmit antenna combination
bit error rate
