A Digital Phase Locked Loop based Signal and Symbol Recovery System for Wireless Channel (Signals and Communication Technology)

Basab Bijoy Purkayastha, Kandarpa Kumar Sarma

  • 出版商: Springer
  • 出版日期: 2015-02-17
  • 售價: $4,460
  • 貴賓價: 9.5$4,237
  • 語言: 英文
  • 頁數: 244
  • 裝訂: Hardcover
  • ISBN: 8132220404
  • ISBN-13: 9788132220404
  • 海外代購書籍(需單獨結帳)


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.