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Adaptive limited feedback for intercell interference cancelation in cooperative downlink multicell networks

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2 Author(s)
Ozbek, B. ; Electron. & Commun. Lab., CNAM, Paris, France ; Le Ruyet, D.

In this paper, we evaluate intercell interference can-celation techniques in cooperative downlink multicell systems. We compare two classical beamforming strategies for the design of the beamforming vectors: maximum ratio combining precoding and partial zero-forcing. Since full channel state information at the transmission is unfeasible, we consider a limited feedback link and compare different strategies for bit partitioning of the feedback information for serving and interferer base stations. We propose a simple adaptive bit partitioning strategy to select an optimum transmission scheme at the base station. We show that the adaptive bit portioning algorithm is improved the sum capacity performance of the multicell networks significantly.

Published in:

Wireless Communication Systems (ISWCS), 2010 7th International Symposium on

Date of Conference:

19-22 Sept. 2010