Blind Uplink Channel Estimation and Multiuser Detection in Code Division Multiple Access System
Jiang Bofeng,Wang Wenjie,Yin Qinye
(Xi'an Jiaotong University, Xi'an 710049, China)

Abstract:  A multiuser detector based on blind channel estimation is proposed. The detection involves estimating every user's channel that is modeled as a FIR filter and calculating every user's  symbols. The estimation of channel is based just on second-order statistics of the received data. Computer simulation is made to show that the method is suitable for code division multiple access (CDMA) multiuser detection of frequency selective fading channel and applicable to near-far resistance. It also has the ability to suppress multiple access interference.
Keywords: blind channel estimation;code division multiple access;multiuser detection