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In this paper, we propose a three-cell network multiple-input multiple-output (MIMO) scheme to mitigate the inter-cell interference in an orthogonal frequency division multiple access (OFDMA) system with each cell using the same spectrum. One fundamental question to apply the network MIMO technique in such a high interference environment is: how many base station should coordinate together to provide...
Interference alignment is evaluated as a technique to mitigate inter-cell interference in the downlink of a cellular network using OFDMA. The sum mutual information achieved by interference alignment together with a zero-forcing receiver is considered, and upper and lower bounds are derived for the case of imperfect channel knowledge. The sum mutual information achieved by interference alignment when...
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