Method, base station and wave filter for reducing adjacent channel interference in wireless system

Abstract

The embodiment of the invention discloses a method for reducing the adjacent frequency interference of the wireless system, and the method comprises the following steps: A. inputting the modulated business signal into the molding wave filter, and obtaining the business data with reduced adjacent frequency interference when the molding wave filter executes wave filtering treatment according to thestored wave filter coefficient and business signal with reduced adjacent frequency interference; B. converting the business data with reduced adjacent frequency interference to the analog signal, andtransmitting the middle frequency point to the wireless receiving terminal when the middle frequency point of the analog signal is converted to the middle frequency point with the transmitting frequency band prescribed by the base station on the base band. The embodiment of the invention also discloses a base station for reducing the adjacent frequency interference of the wireless system and a wave filter for reducing the adjacent frequency interference of the wireless system. The technical scheme of the invention reduces the interference between the adjacent frequencies and facilitates the normal operation of the wireless receiving terminal in the covering area of the adjacent frequency domain.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method for reducing adjacent frequency interference in a wireless system, a base station and a filter. Background technique [0002] In a wireless communication system, there is an interference problem between adjacent frequencies. Here, the adjacent frequency interference is described by taking the CDMA protocol as an example. [0003] In the CDMA protocol, the transceiver frequency range of base stations in each frequency band and the bandwidth of each CDMA carrier are stipulated. The base station outputs the data signal with the bandwidth specified in the protocol to the wireless receiving terminal after filtering by the forming filter. Here, the wireless receiving terminal is used as a mobile phone for illustration. [0004] In actual engineering, the shaping filter of the base station cannot meet the ideal requirements, and the signal power is completely limited withi...

AI Technical Summary

Problems solved by technology

[0010] The above method of building a network at the same site has the following disadvantages: this method is only applicable to the internal network optimization of the same operator

Moreover, the market strategies and network coverage goals of each network operator may be different, making it more difficult to build a network at a common site

Therefore, the method of building a network at the same site is often impossible to implement in practice, and it cannot reduce the interference between adjacent frequencies of the wireless system.

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