基于干扰对齐的多用户全双工通信中干扰消除方法  

Interference Cancellation Based on Interference Alignment for Multiuser Full-Duplex Communications

作　　者：谢显中[1] 王闯[1] 张森林[1] 葛振涛[1] 

机构地区：[1]重庆邮电大学个人通信研究所,重庆400065

出　　处：《北京邮电大学学报》2015年第6期87-92,共6页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61271259;61301123);重庆市自然科学基金项目(CTSC2011jj A40006);重庆市教委科学技术研究项目(KJ120501;KJ130536)

摘　　要：为了消除多用户全双工干扰信道中的自干扰和互干扰,将干扰对齐思想应用于全双工干扰信道中.根据多用户全双工模型的特性将其等效为单向信道模型,并给出了等效模型与原模型之间的信道矩阵对应关系;基于此等效模型和信道矩阵对应关系,应用迭代干扰对齐和最大信干噪比方法将其自干扰和互干扰消除;干扰泄漏功率的仿真结果验证了算法的有效性和正确性,系统容量和平均能量效率也较其他算法都有明显提高.There exist self-interference and mutual interference in multiuser full-duplex system. The interference alignment technique（ IA） is applied to eliminate both self-interference and mutual interference in multiuser full-duplex communication. According to the characteristics of the multiuser full-duplex system,it is treated as a one-way channel model and the channel matrix of the corresponding relationship between the equivalent model and the original model is given. Based on this thoughtfulness,the minimum interference leakage alignment（ Min-IL） and the maximum signal to interference plus noise ratio algorithm（ Max-SINR） were presented to eliminate both self-interference and mutual interference in multiuser full-duplex communications. Simulation proves that the proposed algorithms are effective. Comparing with other schemes,both the system capacity and the average energy efficiency are improved obviously by the proposed schemes.

关 键 词：多用户全双工干扰信道 干扰对齐 最大信干噪比 容量 平均能量效率 

分 类 号：TN929.53[电子电信—通信与信息系统]