A METHOD AND UNIT FOR MULTI-USER INTERFERENCE CANCELLATION

摘要

The invention disclose a method and unit for multi-user interference cancellation, which method mostly include: the input baseband signal is de-multiplexed and spreaded spectrum utilizing de-spread unit; then the de-spread signal proceeds to be de-spread with Walsh in different channel, so that the signal of each channel for user is separated; the separated bit stream of each channel multiplies a conjugate signal of the output estimated value from a pilot estimator A to counteract the effect in multipath fading; the multiplied bit stream is input to the decision circuit for judging; the steps for the constructing the threshold of judging as required etc.; utilizing other two pilot estimators B, C as well as the number of subscriber, the type of channel and the type of server providing by the system, the invention can control and process the signal decision and signal restore more accurately, increasing accuracy that interference is cancelled thereby improving performance of the system.