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http://dx.doi.org/10.7840/KICS.2011.36A.6.592

Selective Subspace Interference Alignment for Cognitive Radio Systems  

Cho, Hyung-Weon (삼성탈레스(주))
Park, Jong-Hun (삼성탈레스(주))
Hong, Suk-Jin (인하대학교 전자공학과)
Seo, Jong-Pil (인하대학교 전자공학과)
Chung, Jae-Hak (인하대학교 전자공학과)
Chung, Jong-Moon (연세대학교 전기전자공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.6A, 2011 , pp. 592-600 More about this Journal
Abstract
This paper presents a selective interference alignment for cognitive radio system with spectrum leasing. The proposed method selects users who cause severe interference to other basestations that have required SINR. Since few users are selected to apply subspace interference alignment, the total complexity of the system is not high compared with that of the system who utilizes subspace interference alignment to all users. In addition, all users can transmit without considering interference. The computer simulation shows the proposed method exhibits 350% throughput enhancement at a two cell case, and 400% increase at a three cell case.
Keywords
User Selection; Subspace Interference Alignment; Inter-cell Interference Management;
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