Intercell Interference Coordination through Limited Feedback

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The authors consider the applications of multicell transmission schemes to the downlink of future wireless communication networks. A multicell Multiple-Input Multiple Output-(MIMOs) based scheme with limited coordination among neighboring Base Stations (BSs) is proposed to effectively combat the intercell interference by taking advantage of the degrees of freedom in the spatial domain. In this scheme, mobile users are required to feedback channel-related information to both serving base station and interfering base station. Furthermore, a chordal distance-based compression scheme is introduced to reduce the feedback overhead. The performance of the proposed scheme is investigated through theoretical analysis as well as system level simulations.