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Interference Space Reuse and the Adoption Strategy through QoS Constraints in Three-Cell Downlink MIMO Interference Channels
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 Title & Authors
Interference Space Reuse and the Adoption Strategy through QoS Constraints in Three-Cell Downlink MIMO Interference Channels
Yoon, Jangho; Lee, Hwang Soo;
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We propose an interference space reuse (ISR) algorithm for the MU-MIMO design in 3-cell downlink interference channels. Also, we provide a strategy for the adoption of the ISR scheme in the cellular network. In the multicell interference channels, the cell edge users may undergo severe interferences and their signals should be protected from the interferers for reliable transmissions. However, the intra cell users do not only experience small interferences but also they require small transmission power for stable communication. We provide a vector design algorithm based on ISR, where intra cell users are served through reusing the cell edge users' interference space. The performance enhancement reaches 20% compared to the fractional frequency reuse (FFR) scheme combined with IA through the scheduling between the cell edge users and the intra cell users. Also, it can be used to enhance the cell edge throughput when the quality of service (QoS) requirements of the intra cell users are fixed.
interference space reuse;MU-MIMO;interference alignment;user pairing;
 Cited by
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