System and method for locking base station based on CDMA 2000 continuous carriers

Abstract

The invention discloses a system and a method for locking a base station based on CDMA 2000. The system comprises an analog-to-digital converter, a first digital up conversion module, a first digital down conversion module, an interference offset module, an automatic level control module, a frequency-selecting filtering module, plural digital up conversion modules, plural digital down conversion modules, a base station locking module, and a digital analog converter. The method comprises the following steps: transforming an input signal by the analog-to-digital converter; down converting the transformed signal to zero frequency by the first digital down conversion module, filtering and extracting; performing interference offset by the interference offset module; performing level control by the automatic level control module; performing plural down conversion, frequency-selecting filtering and plural up conversion; sending the signal to the base station locking module to process; up converting the signal to an intermediate frequency; changing into an analog intermediate frequency signal through digital-to-analog conversion; and performing analog mixing and sending the signal to a power amplifier to be amplified and output. The system and the method can reduce pilot frequency power which is closed to a target base station, rule out the possibility that a mobile phone is locked to a non-target base station, and can be widely used in the field of communication.

Description

technical field [0001] The invention relates to the communication field, in particular to a base station locking system and method based on CDMA2000 continuous carrier. Background technique [0002] Explanation of terms: [0003] ADC (Analog-to-Digital Converter): Analog-to-Digital Converter; [0004] CDMA (Wideband Code Division Multiple Access): Code Division Multiple Access, a third-generation wireless communication technology; [0005] DAC (Digital-to-Analog Converter): digital-to-analog converter; [0006] FPGA (Field Programmable Gate Array): field programmable gate array; [0007] ICS (Interference Cancellation System): interference cancellation system; [0008] CCS (CPICH Cancellation System): pilot cancellation system; [0009] PN sequence (Pseudo-noise Sequence): Pseudo-noise sequence. [0010] In daily application, in the digital wireless repeater, the received signal cannot be screened and amplified at the same time, which affects the quality of calls and I...

AI Technical Summary

Problems solved by technology

[0010] In daily application, in the digital wireless repeater, the received signal cannot be screened and amplified at the same time, thus affecting the quality of calls and Internet access

The problem of pilot pollution caused by base station site selection is common

[0011] The existin

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