Uplink capacity of self-organizing clustered orthogonal CDMA networks in flat fading channels

Abstract : In this paper, we derive a deterministic equivalent of the Shannon-transform of certain type of large unitary random matrices. This approximation is exploited to evaluate the uplink channel capacity of clustered orthogonal CDMA network. When non-uniform power allocation among the users of each cluster is allowed, we derive an explicit iterative water-filling algorithm which, upon convergence, achieves the multi-user decoding capacity. In particular, we show that, in a self-organizing clustered orthogonal CDMA network, each cluster can optimize its power allocation policy independently of the other clusters at the expense of a small feedback overhead. Simulations corroborate the theoretical derivations.
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Romain Couillet, Merouane Debbah. Uplink capacity of self-organizing clustered orthogonal CDMA networks in flat fading channels. ITW-2009, Oct 2009, Italy. 5 p. ⟨hal-00414531⟩

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