A digital phase locked loop based signal and symbol recovery system for wireless channel [electronic resource]

• 作者： Purkayastha, Basab Bijoy.
• 其他作者：
  • Sarma, Kandarpa Kumar.
  • SpringerLink (Online service)
• 其他題名：
  • Signals and communication technology
• 出版： New Delhi : Springer India :Imprint: Springer
• 叢書名： Signals and communication technology
• 主題： Signal processing , Phase-locked loops , Wireless communication systems , Engineering , Communications Engineering, Networks. , Electronics and Microelectronics, Instrumentation. , Computer Communication Networks
• ISBN： 9788132220411 (electronic bk.) 、 9788132220404 (paper)
• FIND@SFXID: CGU
• 資料類型: 電子書
• 內容註: Introduction -- Transmitter Receiver Techniques -- Modulation Techniques and Signal Processing -- Basic Considerations of PLL and Its Types -- Digital Phased Locked Loop -- Synchronization -- A Zero Crossing Algorithm based Digital Phase Locked Loop -- Least Square Polynomial Fitting based Digital Phase Locked Loop -- A DPLL based Recovery System for Nakagami-m Fading Channel -- Coding Assisted Carrier and Symbol Recovery using DPLL -- Carrier Phase Detection of Rayleigh and Rician Faded Signals using Digital Phase Locked Loop -- DPLL based Square Loop for Carrier Synchronization over Fading Channel -- Conclusions and Future Direction.
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• 摘要註: The book reports two approaches of implementation of the essential components of a Digital Phase Locked Loop based system for dealing with wireless channels showing Nakagami-m fading. It is mostly observed in mobile communication. In the first approach, the structure of a Digital phase locked loop (DPLL) based on Zero Crossing (ZC) algorithm is proposed. In a modified form, the structure of a DPLL based systems for dealing with Nakagami-m fading based on Least Square Polynomial Fitting Filter is proposed, which operates at moderate sampling frequencies. A sixth order Least Square Polynomial Fitting (LSPF) block and Roots Approximator (RA) for better phase-frequency detection has been implemented as a replacement of Phase Frequency Detector (PFD) and Loop Filter (LF) of a traditional DPLL, which has helped to attain optimum performance of DPLL. The results of simulation of the proposed DPLL with Nakagami-m fading and QPSK modulation is discussed in detail which shows that the proposed method provides better performance than existing systems of similar type.
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