MOE reciever with channel estimation in CDMA system

The authors analyze the problems faced by MMSE receiver with MOE criterion, which lead to decision errors for sequent users data and can´t obtain ideal filter performance in Rayleigh fading channel. We presented a MOE receiver with a new structure to tackle the problems existing in traditional receivers with MOE criterion in CDMA system, and the corresponding RLS iterative algorithm is also presented. In the presented receiver, channel estimation is introduced and 3 bits are inserted as the reference signals every 24 bits to estimate channel. The decision feedback data have no influence on the sequent data and system robustness has been improved in this kind of receiver. In addition, the length of data frame is not affected by the reference signals introduced in MOE receiver. In general, the presented receiver is low-complexity, high-performance and lower-BER.