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Performance of partial parallel interference cancellation in DS-CDMA system with delay estimation errors

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2 Author(s)
Gao Xue ; Modern Commun. Inst., Northern Jiaotong Univ., Beijing, China ; Chengshu Li

We study partial parallel interference cancellation in DS-CDMA system with delay estimation errors. The aforementioned work showed that by multiplying symbol estimates by a factor less than unity in early stages of cancellation, the performance of parallel cancellation can be improved relative to full (“brute force”) cancellation. Shan and Rappaport (see IEEE GlobeCom'98, vol.3, p.2615-20, 1998) shows that the BER performance is a function of the factor and the “best factor” can be far less than one. In practical system, delay estimation errors need to be considered. This paper considers the effect of tracking errors on the selecting of “best factor”. We show that due to the timing error the interference cancellation is less reliable and less factor of cancellation need to be employed

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Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on  (Volume:1 )

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