A New Distributed Interference Alignment Technology Scheme Under the Condition of Partial Interference Alignment

This paper is based on the idea of partial interference alignment, studies the OBSS (Overlap Basic Service Set) scene that the strong and weak interference coexist, while mainly to strong interference. When only adopting distributed interference alignment for the strong interference region, since distributed interference alignment can only align the interference of strong interference region, if the SNR is relatively large, weak interference can severely limit the system’s channel capacity. For solving this problem, in this paper, weak interference is added to the covariance matrix of distributed interference alignment as a constant in order to eliminate the weak interference while eliminating the strong interference in the iteration, which effectively improves the system’s channel capacity under the condition of partial interference alignment. Then the simulation results show that the algorithm can effectively improve the channel capacity of the system, and greater power attenuation factor, the improved effect is more obvious.