Method for implementing continuous carrier frequency configuration for CDMA (Code Division Multiple Address) digital optical fiber repeater

Abstract

The invention relates to a method for implementing continuous carrier frequency configuration for a CDMA digital optical fiber repeater, which comprises the following steps of: judging the currently used frequency point number, the number S of frequency points and n continuous carrier frequency manners according to the carrier frequency configuration of the superior network management by the CDMAdigital optical fiber repeater, wherein n is a natural number arranging from 1 to 7, judging and recording the number of the carrier frequencies used and the distribution of the continuous carrier frequencies by sequencing the frequency number and detecting the difference, calculating the configuration parameters of a digital mixer and the configuration bandwidth of a digital filter, treating thecontinuous carrier frequencies as one carrier frequency, using one mixing configuration parameter; reconstructing the used digital filter according to the configuration parameters of the digital mixer and the configuration bandwidth of the used digital filter to implement variable signal processing bandwidth and process different carrier frequency configuration manners; and accumulating data for different signal bandwidth processing channels to process a signal carrier frequency and various different continuous carrier frequencies. The invention is flexible and simple and has strong adaptability.

Description

technical field [0001] The invention relates to a method for realizing continuous carrier frequency setting in a CDMA digital optical fiber repeater station. Background technique [0002] CDMA digital optical fiber repeater is a wireless network coverage device that uses software radio technology to digitize the CDMA Um port signal, transmits it to the remote end through optical fiber, and uses the remote radio frequency unit to regenerate and amplify to realize the wireless network coverage of the base station signal. The system digitizes the RF signal by means of software radio, and processes the signal in the digital domain, which greatly enhances the device's ability to process and control the signal. The use of digital filters can obtain better filtering processing capabilities, and is easy to upgrade, maintain and expand functions. [0003] CDMA is a multiple access method based on wideband spread spectrum technology, which can separate signals in the same time slot a...

AI Technical Summary

Problems solved by technology

The chip rate of CDMA is 1.2288M. If it is required to directly filter and distinguish adjacent frequency points, the filter transition band used is very steep, which must use a very high-order filter, resulting in a lot of hardware resources and time delay. So big, it's practically impossible to achieve

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