标题：A Novel Interference Alignment Scheme for Two-Cell MIMO Downlink Channels
作者：Guo, Shuaishuai; Zhang, Haixia; Yuan, Dongfeng; Zhao, Feng
作者机构：[Guo, Shuaishuai; Zhang, Haixia; Yuan, Dongfeng] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Shandong, Peoples R China.; [Zhao, Feng] Guil 更多
会议名称：6th International Conference on Ubiquitous and Future Networks (ICUFN)
会议日期：JUL 08-11, 2014
来源：2014 SIXTH INTERNATIONAL CONFERENCE ON UBIQUITOUS AND FUTURE NETWORKS (ICUFN 2014)
关键词：Interference Alignment; Multiple-Input Multiple-Output; sum capacity;; mutual information; interference channel
摘要：In this work, we propose a novel interference alignment (IA) scheme for two-cell MIMO downlink channels. With this scheme the interference will be aligned to the same directions with the desired signals when the transmitters are sending out the same symbols, otherwise, the interference will be aligned to the orthogonal directions of the desired signals as the traditional IA scheme does. As a result, it outperforms the traditional IA schemes in terms of capacity and mutual information, which is verified by simulation results. Numerical results also show that the mutual information improvement will decrease as the modulation level goes high.