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The Research and Implementation of Railway Wireless Transmitter-receiver Base Band Signal Processing Module

Author: LiYanBing
Tutor: LiuKaiHua
School: Tianjin University
Course: Communication and Information System
Keywords: DSP Locomotive station CTCSS Minimum Shift Keying FIR filter TMS320C5402 TMS320F2812
CLC: TP274.2
Type: Master's thesis
Year: 2007
Downloads: 89
Quote: 1
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Abstract


This topic is commissioned by Tianjin Tongguang Group Research and Implementation of the completion of the 4137 train radio dispatching locomotives designed and manufactured by the wide group mobile radio baseband signal processing part . The original 4137 locomotive station in the baseband signal processing section is composed of a plurality of specialized chips , wherein the signal detection and voice filter using the analog mode of the chip , to implement modulation and demodulation by the MSM6882 . The structure is not conducive to the expansion and upgrade of the system 's functionality . In addition , due to the chip for signal detection function is now discontinued , temporarily unable to find a suitable alternative . Therefore , wide company decided to constitute the core of high-performance digital signal processor (DSP) baseband signal processing module . This paper describes the subject of hardware , algorithms and software design process and principle . Of in-depth study of railway locomotive radio 's hardware configuration and the specific program , to understand the way its baseband signal processing part of the work , thereby reasonable design of using TMS320C5402 is the DSP system , and clever use of DSP interrupt resources and the I / O port , making the system does not change the premise of the original the locomotive radio host interface and procedures , to achieve the integration of the baseband section . In addition , the requirements of the railway standard designed audio and sub- audio codec algorithm and MSK modulation and demodulation algorithm , first written in VC environment program , and through the simulation of MATLAB tools , and finally established DSP development platform CCS works , debugging through . After testing of the integrated test instrument , after a reasonable optimization algorithms and software , the system can efficiently complete baseband signal processing . The Railway Train Dispatching system upgrade program design solutions produced by TI digital signal controller \The paper its feasibility analysis concluded that the program can effectively improve the system performance , cost savings .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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