DocumentCode :
2648238
Title :
Uplink capacity of self-organizing clustered orthogonal CDMA networks in flat fading channels
Author :
Couillet, Romain ; Debbah, Mérouane
Author_Institution :
ST-Ericsson, Supelec, Sophia Antipolis, France
fYear :
2009
fDate :
11-16 Oct. 2009
Firstpage :
605
Lastpage :
609
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 multiuser 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.
Keywords :
channel capacity; code division multiple access; fading channels; Shannon-transform; flat fading channels; nonuniform power allocation; self-organizing clustered orthogonal CDMA networks; uplink channel capacity; Channel capacity; Clustering algorithms; Conferences; Fading; Frequency; Information theory; Interference; Iterative algorithms; Multiaccess communication; Self-organizing networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory Workshop, 2009. ITW 2009. IEEE
Conference_Location :
Taormina
Print_ISBN :
978-1-4244-4982-8
Electronic_ISBN :
978-1-4244-4983-5
Type :
conf
DOI :
10.1109/ITW.2009.5351213
Filename :
5351213
Link To Document :
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