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http://dx.doi.org/10.5573/IEIESPC.2014.3.2.83

Energy-Efficient Opportunistic Interference Alignment With MMSE Receiver  

Shin, Won-Yong (Department of Computer Science and Engineering, Dankook University)
Yoon, Jangho (Department of Electrical Engineering, KAIST)
Publication Information
IEIE Transactions on Smart Processing and Computing / v.3, no.2, 2014 , pp. 83-87 More about this Journal
Abstract
This paper introduces a refined opportunistic interference alignment (OIA) technique that uses minimum mean square error (MMSE) detection at the receivers in multiple-input multiple-output multi-cell uplink networks. In the OIA scheme under consideration, each user performs the optimal transmit beamforming and power control to minimize the level of interference generated to the other-cell base stations, as in the conventional energy-efficient OIA. The result showed that owing to the enhanced receiver structure, the OIA scheme shows much higher sum-rates than those of the conventional OIA with zero-forcing detection for all signal-to-noise ratio regions.
Keywords
Energy efficiency; Minimum mean square error (MMSE) detection; Multi-cell uplink network; Opportunistic interference alignment (OIA);
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