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

Abstract:

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.

Key words: multiuser full-duplex interference channel, interference alignment, maximum signal to interference plus noise ratio, capacity, average energy efficiency