Transmit power and other-cell interference reduction via successive interference cancellation with imperfect channel estimation
Jeffrey G. Andrews, T.H. Meng · 2002
Successive interference cancellation (SIC), in conjunction with orthogonal convolutional codes, has been shown to approach the Shannon capacity for an AWGN channel. However, multi-cell fading wireless channels induce error in the amplitude and phase estimates required to perform perfect cancellation of the interference. By combining SIC with a previously developed power control algorithm, we show that other-cell interference and transmit power can be reduced by an order of magnitude or more relative to a conventional (IS-95 style) CDMA system. In addition, even as estimation error becomes large, the capacity is more than doubled over systems without interference cancellation or those that employ SIC without optimum power control.