According to the trend and request of software radio, the paper introduces the effective technique of increasing frequency-bandwidth efficiency, reduces or eliminates ISI based on band signal disposing.

• 根据软件无线电发展的方向和要求,介绍了通过对基带信号处理来提高频带效率,减少或消除无符号码间干扰(insigninterferer,ISI)的有效方法;