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On ASIC Algorithm for Power Line Spread Spectrum Carrier Communication

Author: LiZhiXue
Tutor: LuWenKe
School: Xi'an Institute of Technology
Course: Control Theory and Control Engineering
Keywords: Power Line Carrier Spread spectrum communication Modem Frequency Shift Keying
CLC: TN914.5
Type: Master's thesis
Year: 2002
Downloads: 239
Quote: 1
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Abstract


At present , the development of powerline communications abroad soon , the latest OFDM power line modem technology is expected to become a solution to solve the \very mature . However , foreign low-voltage power line communication Modem chip in domestic use but poor results because of poor grid environment and abroad are very different . Analysis of the status of low voltage power line at home and abroad , mainly developed for a company dedicated chip made ??of low-voltage Power Line Carrier Modem early algorithm simulation and experimental . Using binary frequency shift keying (2FSK) carrier modulation and demodulation algorithm from abroad such modem theory based on this algorithm are discussed in detail , and the C language simulation and hardware test . To suppress serious noise on China 's low-voltage power line environment for system design suitable for power line communication spreading . Modulation demodulation algorithms on 2FSK first theoretical analysis and simulation in C language environment . Simulation results show that : the algorithm in the addition of white noise , it is possible to correctly demodulate the transmitted data . To verify the algorithm in hardware experiments using TI's DSP chip TMS320VC5402 production to build a hardware platform , and DSP software platform CCS1.2 the software debugging . Actual hardware experiments completed 2FSK modem loopback test . The results showed that: in the process of non-real time demodulation of the modulation and demodulation algorithm with higher accuracy , it is possible to correctly demodulate the transmitted data .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication systems ( transmission system) > Multiple access communication system
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