Narrowband Interference Canceller System with Adaptive Compensation Filter and its Method in CDMA System

摘要

1. TECHNICAL FIELD OF THE INVENTION;The present invention relates to a narrowband interference noise control apparatus and method using an adaptive compensation circuit in a code division multiple access system.;2. The technical problem to be solved by the invention;The present invention provides a narrowband interference noise control device to remove / suppress the narrowband interference noise as much as possible by using an autoregressive, least square average (LMS) algorithm, and an adaptive compensation algorithm before despreading a received signal. And a computer readable recording medium having recorded thereon a method and a program for realizing the method.;3. Summary of Solution to Invention;An interference noise control apparatus applied to a code division multiple access system, comprising: analog-to-digital (A / D) conversion means for converting a received analog signal into a digital signal;;Digital downconversion means (DDC) for converting the converted digital signal into a baseband signal; Autoregressive, least mean square (LMS) algorithms and adaptive compensation algorithms are used to remove narrowband interference noise signal components from the transformed baseband signal and control the final output to a predetermined reference range. Adaptive interference noise control means for; Digital upconverting means (DUC) for converting the digital signal from which the narrowband interference noise is removed into a digital upconverting frequency band signal; And digital-to-analog (D / A) converting means for converting the converted digital upconverted frequency band signal into an analog signal.;4. Important uses of the invention;Used for interference noise control in code division multiple access system.