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Subspace Interference Alignment by Orthogonalization of Reference Vectors  

Seo, Jong-Pil (인하대학교 전자공학과 무선이동통신 연구실)
Kim, Hyun-Soo (인하대학교 전자공학과 무선이동통신 연구실)
Lee, Yoon-Ju (한국전자통신연구원)
Kwon, Dong-Seung (한국전자통신연구원)
Kim, Ji-Hyung (한국전자통신연구원)
Chung, Jae-Hak (인하대학교 전자공학과 무선이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.1A, 2010 , pp. 54-61 More about this Journal
Abstract
We propose a subspace interference alignment by orthogonalization of reference vectors. The proposed method improves the sum-rate capacity degradation due to the channel decomposition error and channel estimation error in the real environment. Using the proposed method, each cell uses the reference vector that is orthogonal to the adjacent cells. Then the residual interference produced by the channel decomposition error and the channel estimation error is decreased. The simulation results demonstrate that the proposed method achieves the enhanced sum-rate capacity.
Keywords
Subspace Interference Alignment; Inter-cell Interference Management; Orthogonalization;
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