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Reverse link capacity analysis of cellular CDMA systems with controlled power disparities and successive interference cancellation

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3 Author(s)
Hong Nie ; Dept. of Eng., Cape Breton Univ., Sydney, NS ; Mathiopoulos, P.T. ; Karagiannidis, G.K.

This paper presents a new approach in analyzing the reverse link capacity performance of cellular CDMA systems employing successive interference cancellation (SIC). Due to the controlled power disparity present in such systems previous methods cannot precisely model their inter-cell interference. We first introduce a novel model which allows the accurate analysis and evaluation of the inter-cell interference of cellular CDMA systems with controlled power disparity. Its validity is verified by means of theoretical analysis and computer simulations. Secondly, by using this new inter-cell interference model, a theoretical analysis of the CDMA reverse link capacity is presented. In terms of evaluation results, we focus on the performance improvements SIC offers as compared to single user detection (SUD). Analytical results complemented by equivalent computer simulated performance evaluation results have shown that SIC significantly increases the reverse link capacity of cellular CDMA systems operating in realistic controlled power disparity environments

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Wireless Communications, IEEE Transactions on  (Volume:5 ,  Issue: 9 )