%0 Journal Article
%A LEI Wei-jia
%A XIE Xian-zhong
%A ZHANG Qin
%T Interference Alignment and Power Allocation Algorithm of Two Unicast Multiple Hops Network
%D 2015
%R 10.13190/j.jbupt.2015.03.011
%J Journal of Beijing University of Posts and Telecommunications
%P 71-76
%V 38
%N 3
%X <p>Considering the 2-unicast problem with multiple hops and two relays, research the interference alignment precoding matrixs at the sources, the interference elimination decoding and precoding forward at the relays, and interference cancellation decoding at the destinations are researched. The simplified feasible conditions of network interference alignment were given based on the analysis of constraints of network interference alignment and decoding. In addition, the power allocation of relays and sources are optimized. Simulation tests of the feasibility of interference alignment shows a good performance of the power allocation. And it is shown that interference alignment is feasible if conditions were satisfied, and the system capacity is significantly improved when the simplified water filling power allocation algorithm is used when comparing with the average power allocation algorithm.</p>
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2015.03.011