Investigation And Designing Of GSM/WLAN Co-existence System

Along with the development of communication technology,increasing needs for telecommunications service,the problems about redundant construction,enhanced costs and limited space become more serious in signal acquisition.GSM/WLAN co-existence system is a available means to solve those problems.WLAN&GSM access technology mainly includes two kinds of access mode:simple direct integrated access and special signal integrated access.The major used equipment are: combiner,WLAN power amplifier.It must be taken into account that there should be interference when two different types of signal share the antenna-feeder system.This paper is the main result of the project on the construction of GSM/WLAN Co-existence system for Anhui Vocational college of Electronics and Information Technology.The project can be divided into four modules:comprehensive Fiber Optical overlaying System module,AP module,signal integrated module and antenna-feeder system module etc.in systems design.The primal problem of comprehensive Fiber Optical overlaying System is location of repeater and installation of repeater's antenna;The principal question of designing AP module is electrotype of AP equipment,quantity determination and channel allocation;That of signal integrated module is allocation of joined point and fixing of facility;while the designing of antenna-feeder system module also need settle the problem of electrotype,setting indoor/outdoor aerials and non-blind spot of signal coverage and so on.Finally,the paper introduce how to use signal-testing device to detect signal intensity of the complete system,according to the testing result,assessment and improvement can be put effect to the design as a return.