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Reference Vector Diversity of Subspace Interference Alignment in Multi-cell Multi-user Uplink Systems  

Seo, Jong-Pil (Inha University)
Lee, Yoon-Ju (Inha University)
Kwon, Dong-Seung (Inha University)
Lee, Myung-Hoon (Inha University)
Chung, Jae-Hak (Electronics and Telecommunications Research Institued)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.7, 2010 , pp. 23-28 More about this Journal
Abstract
We propose a reference vector diversity method in multi-cell multi-user uplink system with the subspace interference alignment to obtain higher sum rate capacity. The proposed method transmits several reference vectors before the data transmission, and selects the best reference vector to maximize the cell sum rate. The proposed method provides higher sum-rate capacity compared with the previous interferenc alignment. Simulation result exhibits the proposed method improves the sum-rate capacity by 60%.
Keywords
Interference Alignment; Reference Vector; Throughput Maximization;
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