Interference canceller for cdma

摘要: A code-orthogonalizing filter 101 performs inverse spread using an orthogonalizing coefficient, which is obtained through a constraint condition process on code multiplexed received signal as input with desired waveform and independent transmission line variations, thus detecting wave at constant power level while suppressing interference waves. carrier tracking circuit 102 effects phase synchronization of the detected wave. symbol decision unit 104 decides output to be most certain symbol. An adder extracts error from outputs 103 102. tap coefficient control means 105 adaptively updates according 101, reproduced outputted 102, waveform.