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User Selection Method of Subspace Interference Alignment in Multi-cell Uplink Systems  

Seo, Jong-Pil (인하대학교 전자공학과 무선이동통신 연구실)
Kim, Hyun-Soo (인하대학교 전자공학과 무선이동통신 연구실)
Ahn, Jae-Jin (인하대학교 전자공학과 무선이동통신 연구실)
Chung, Jae-Hak (인하대학교 전자공학과 무선이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.3A, 2010 , pp. 238-244 More about this Journal
Abstract
We propose a user selection method in multi-cell multiuser uplink system with the subspace interference alignment to maintain the high sum-rate capacity. The proposed method selects users whose interference to adjacent cells are strong and apply the subspace interference alignment to the users. The proposed method provides that the number of users performing the interference alignment reduces and the high total sum-rate is maintained. Simulation results exhibit the proposed method reduces the number of users who would decompose the channel for the subspace interference alignment by 50% when the required sum-rate is 90% of the maximal achievable sum-rate.
Keywords
User Selectioin; Subspace Interference Alignment; Inter-cell Interference Management;
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