Erschienen: 17.02.2015 Abbildung von Purkayastha / Sarma | A Digital Phase Locked Loop based Signal and Symbol Recovery System for Wireless Channel | 1. Auflage | 2015 | beck-shop.de

Purkayastha / Sarma

A Digital Phase Locked Loop based Signal and Symbol Recovery System for Wireless Channel

Buch. Hardcover

2015

xxi, 244 S. 118 s/w-Abbildungen, 17 s/w-Tabelle, Bibliographien.

In englischer Sprache

Springer. ISBN 9788132220404

Format (B x L): 15,5 x 23,5 cm

Gewicht: 567 g

Das Werk ist Teil der Reihe: Signals and Communication Technology

Produktbeschreibung

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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