空频联合干扰对齐中的子载波分组处理方案

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.

Joint Space-frequency Interference Alignment Algorithm of Subcarrier Grouping Processing

Interference alignment is an important signal transmission techniques in wireless communication system to solve t-he mutual interference between users . To compensate for the traditional interference alignment beamforming sch-eme utilized only in space, we propose a joint space-frequency interference alignment algorithm subcarrier groupi-ng treatment program. Found in simulated interference alignment feasibility in the framework of the system model, we performed the signal in the frequency domain subcarrier grouping process, then each packet in the precoding, the purpose of the respective set of subcarriers do not interfere with each other ,and then transmitting the plurality of antennas. Receiving end then use interference suppression algorithm, making signal interference terminal align-ment. Simulation results show that this scheme get a greater extent to improve system capacity and transfer rate w-hile the performance is the same as traditional interference alignment scheme.