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• W2950152649 abstract "Downlink spatial intercell interference cancellation (ICIC) is considered for mitigating other-cell interference using multiple transmit antennas. A principle question we explore is whether it is better to do ICIC or simply standard single-cell beamforming. We explore this question analytically and show that beamforming is preferred for all users when the edge SNR (signal-to-noise ratio) is low ($ 10$ dB), for example in an urban setting. At medium SNR, a proposed adaptive strategy, where multiple base stations jointly select transmission strategies based on the user location, outperforms both while requiring a lower feedback rate than the pure ICIC approach. The employed metric is sum rate, which is normally a dubious metric for cellular systems, but surprisingly we show that even with this reward function the adaptive strategy also improves fairness. When the channel information is provided by limited feedback, the impact of the induced quantization error is also investigated. It is shown that ICIC with well-designed feedback strategies still provides significant throughput gain." @default.
• W2950152649 created "2019-06-27" @default.
• W2950152649 creator A5042833857 @default.
• W2950152649 creator A5071672663 @default.
• W2950152649 date "2009-09-15" @default.
• W2950152649 modified "2023-09-27" @default.
• W2950152649 title "Adaptive Spatial Intercell Interference Cancellation in Multicell Wireless Networks" @default.
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• W2950152649 hasPublicationYear "2009" @default.
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