A New Near Far Resistant Blind DS CDMA Receiver
Liao Gui · Dianzi xuebao · 2000
The problem of signal processing for direct sequence code division multiple access (DS CDMA) signal over multipath frequency selective mobile channels is considered.A new blind receiver is proposed.Without the knowledge of the multiple-access interference users′ spreading code and the channel characteristics,the receiver achieves blind detection with prior knowledge of only the desired users′ spreading code and approximate timing.By using reduced rank adaptive decorrelating filter and adaptive multipath combiner which is based on decision directed algorithm,the receiver gets the ability to combat both fading and the near far effect at low cost.Simulation results demonstrate that the proposed receiver offers high performance.