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The All Digital Phase Lock Loop Technology for Wireless Communication

Author: ZhangWeiCheng
Tutor: ZhouJianJun
School: Shanghai Jiaotong University
Course: Software Engineering
Keywords: DPLL Wireless communication Sigma - Delta Fractional Divider Behavioral models
CLC: TN911.8
Type: Master's thesis
Year: 2010
Downloads: 308
Quote: 1
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Abstract


This paper first introduces the all-digital phase - locked loop used in wireless communication technology , and through the analysis on the the existing DPLL design of contrast , that Bang-Bang digital phase-locked loop is possible optimal DPLL architecture . Bang-Bang digital phase-locked loop is then nonlinear analysis , and on the basis of these analyzes , combined with the traditional PLL existing methods , designed for wireless communication the fractional frequency full digital phase-locked ring system. Finally, the feasibility of the system design through behavioral simulation and related performance indicators . Bang-Bang digital phase-locked loop involves nonlinear theory analysis , mainly using the phase plane method to derive the position and shape of the phase trajectory toward its system description phasor corresponding limit cycle , and Bang-Bang digital phase-locked loop stability on the above analysis , the system dynamic performance . Feedforward system design process , existing in the traditional phase-locked loop adaptive bandwidth adjustment and regulation of the two and fast locking method integrated application . DPLL flexibility and software configurability can the one hand , these two methods in the application of complexity far lower than the traditional phase-locked loop , on the other hand , can play a better secondary locking effect . The Behavioral Simulation results show that the design of all-digital phase-locked loop in about 2 microseconds large frequency lock step .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication theory > Phase lock, the lock-in technique
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