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The authors introduce a technique to achieve Dirty Paper Coding (DPC) capacity asymptotically with minimum feedback required reported to date in literature. Their approach called interference management, is based on a new multi-user diversity scheme designed for wireless cellular networks. When there are K antennas at the base station with M mobile users in the cell, the proposed technique only requires K integer numbers related to Channel State Information (CSI) between mobile users and base station. The encoding and decoding complexity of this scheme is the same as that of point-to-point communications. In order to guarantee fairness, a new algorithm is proposed which incorporates interference management into existing GSM standard.
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