空频联合干扰对齐的子载波分组处理方案  

Joint Space-frequency Interference Alignment Algorithm of Subcarrier Grouping Processing

作　　者：袁莉莉[1] 周小平[1] 

机构地区：[1]上海师范大学信息与机电工程学院,上海200234

出　　处：《电视技术》2015年第9期92-95,共4页Video Engineering

基　　金：上海市教育委员会培养青年教师资助项目;上海师范大学重点学科项目(DZL126);上海师范大学一般项目(SK20131);上海师范大学创新团队建设计划项目

摘　　要：干扰对齐是解决下一代移动通信系统信号传输时用户间相互干扰问题的技术之一。为了弥补传统干扰对齐在空间上波束成形方案的不足,提出一种空频联合干扰对齐中的子载波分组处理方案。对信号在频域上进行子载波分组处理,然后在每个分组上进行预编码,使各组间的干扰为零,然后信号在多个天线上发送,接收端运用干扰抑制方法实现接收端的干扰对齐。仿真结果表明,在相同的信道条件下该方案能更进一步地提高系统容量和传输速率。Interference alignment is an important signal transmission technique in wireless communication system to solve the mutual interference between users. To compensate for the traditional interference alignment beam-forming scheme utilized only in space, a joint space-frequency interference alignment algorithm subearrier grouping treatment program is proposed. Found in simulated interference alignment feasibility in the framework of the system model, the signal in the frequency domain subcarrier grouping process is performed, then each packet in the pre-eoding, the purpose of the respeetive set of sub-carriers do not interfere with each other, and then transmitting the plurality of antennas. Receiving end then use interference suppression algorithm, making sig- nal interference terminal alignment. Simulation results show that this scheme get a greater extent to improve system capacity and transfer rate while the performance is the same as traditional interference alignment scheme,

关 键 词：子载波 分组 干扰对齐 预编码 

分 类 号：TN929.5[电子电信—通信与信息系统]