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Modulation Recognition Of Broadband Wireless Signal

Posted on:2012-04-14Degree:MasterType:Thesis
Country:ChinaCandidate:H WangFull Text:PDF
GTID:2218330368482547Subject:Signal and Information Processing
Abstract/Summary:PDF Full Text Request
Communication signals modulation method is an important feature of communication signals which is an important research topic in the fields of software radio, communications recon, anti-electronic, radio monitoring. Recognition of signal modulation mode means that analyzed the received signal and identified modulation mode of signal and modulation parameters in the condition of no prior knowledge and complex environment with noise interference, thus provide the reference for further analysis and processes signal. With the development of communication technology, the modulation method variety and complexity of modulation increase put forward higher request for the research of modulation mode identification.This paper first introduced the realization of digital receiver multiphase filter channelized and the measurement of magnitude, instantaneous phase, frequency with algorithm of CORDIC. This paper then brief introduced the modulation mode of signal and related theory of modulation mode identification. Then detail described mathematical model of signal modulation mode identification based on decision theory, and researched 13 characteristic parameters of modulation signal according to the decision theory, then algorithm process and threshold of characteristic parameters is given based on the decision theory of modulation mode recognition. This paper mainly studied hardware platform of signal modulation mode identification which based on software radio, detailed introduces the hardware composition and software and hardware development drive configuration, and the experimental process problems should be paid attention to. In the hardware is given, channelized is realization with multiphase filter structure, signal feature parameters is extraction based on the CORDIC algorithm and the process of simulation and experimental results is given of modulation mode identification.
Keywords/Search Tags:channelized, DSP, FPGA, Modulation mode identification
PDF Full Text Request
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