In order to eliminate the effect of linear distortion on the character istics of fluorescent LED based communication system,an experimental system based on fluorescent LED i s established,a network analyzer is then used to analyze amplitude-frequency r esponse curve of the system,and the linear distortion performance is analyzed.Based on the att enuation characteristics of the amplitude-frequency response,the first-,second- and third-order high-pass filters are designed as linear distortion compensation circuits,and the amplit ude-frequency response curve of the system with distortion compensation is further measured w ith the network analyzer.Experimental results indicate that by using the third-order post-equ alization circuit,the linear distortion of the system is obviously improved,and the decrease of the g ain is improved from 50dB within the range of 0.3－6MHz before compensation to 20dB within th e range of 0.3－45MHz with 3rd order compensation.To ensure relatively flat gain charact eristics of the communication system and obtain a small gain variation of less than 10dB,the b andwidth is enlarged from 1.8MHz before compensation to 41MHz (the range is 3－44MHz) wit h 3rd order compensation,indicating an increase factor of 23,and within this frequency ran ge,a larger gain of －30dB is also achieved.Therefore,by compensating the linea r distortion of the communication system,its bandwidth can be effectively enlarged.The proposed exp erimental and analytical results in this paper can provide data basis for system parameter opt i mization and further improvement in communication performance.