The Hardware Design Of IFC Intelligent Entire Frequency Distribution System

Although the mobile communications network has been building for many years, the indoor coverage of depth always is the short board of mobile network signal. The traditional indoor distribution system is facing great challenges: constraints of space and coordination of property,difficulties of equipment installation; the loss of dry road signal, attenuation of power; the difficulty to monitor and maintain the numerous equipment. The new IFC fiber distribution system not only solves the above difficulties, but also is the integration of multiple services at the same time, meet the access of 2G, 3G, 4G, WLAN and many other services.The main contents of this thesis are as follow:1. Based on digital orthogonal mixing, CIC filter, HBF filter and FIR filter design methods,designing the basic structure, the sampling frequency design, chip selection, filter design, selection of FPGA, including the selection of key parameters calculation and the main chip.2. Based on the principle of light emitting and receiving module,designing the light emission module laser driver, APC circuit and automatic temperature closed loop control circuit, and the light receiving module optical detector, TIA and limiting amplifier circuit design.3. Based on Principle of monitor terminal system, designing ARM processor to implement the system of real-time monitoring, monitor terminal is introduced each module hardware circuit design,and probes into the remote power supply and chip design.4. A single voice signal simulation is used to validated digital IF, the optical module is verified by testing the index key parameters, and the IFC system feasibility is authenticated by comparing the rate of 2G/3G/4G before and after the access of the IFC.