Fu Weihong

Inter Cell Interference Cancellation in CDMA System Uplink Based on Blind Source Separation

Aim at the problem of the Inter Cell Interference exist in cellular mobile communication system, the algorithm of Inter Cell Interference Cancellation (ICICc) based on blind source separation was presented. According to the independence between user information, the algorithm separated the interference user information from expected user information by using blind source separation algorithm. In this algorithm, the Available frequency resources of edge cell user are not limited. At the same time, this algorithm deed not needs to know the pilot information of neighbor cell user and to implement channel estimating. Simulation results show that when the number of receiving antennas N, the proposed algorithm can eliminate up to N-1 neighbor cell interference. Meanwhile, if the numbers of interference cell and base station antenna are fixed, the power of interference user has no effect on the performance of algorithm.

Algorithm for source recovery in underdetermined blind source separation based on plane pursuit

In order to achieve accurate recovery signals under the underdetermined circumstance in a comparatively short time, an algorithm based on plane pursuit (PP) is proposed. The proposed algorithm selects the atoms according to the correlation between received signals and hyper planes, which are composed by column vectors of the mixing matrix, and uses these atoms to recover source signals. Simulation results demonstrate that the PP algorithm has low complexity and higher accuracy as compared with basic pursuit (BP), orthogonal matching pursuit (OMP), and adaptive sparsity matching pursuit (ASMP) algorithms.