Channel identification and signal separation for long-code CDMA systems using multistep linear prediction method
Tongtong Li; Zhi Ding; Tugnait, J.K.; Weiguo Liang
Communications, 2004 IEEE International Conference on
Volume 4, Issue , 20-24 June 2004 Page(s): 2437 - 2441 Vol.4
Digital Object Identifier   10.1109/ICC.2004.1312956
Summary: This paper considers blind channel identification and signal separation in long-code CDMA systems. First, by modeling the received signals and MUIs as cyclostationary processes with modulation introduced cyclostationarity, long-code CDMA system is characterized using a time-invariant system model. Secondly, based on the time-invariant model, multistep linear prediction method is used to reduce the intersymbol interference introduced by multipath propagation, and channel estimation can then be performed using the non-constant modulus precoding technique and the matrix pencil approach. After channel estimation, equalization is carried out using cyclic Wiener filter. Simulation examples arc provided to illustrate the proposed approaches.

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