Author: Israel Bar-DavidPublisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
Direct Differential Detection of Phase Shift Keyed Signals
Author: Israel Bar-DavidDirect Bit Detection Receiver Performance Analyses for 8-DPSK (Differential Phase Shift Keyed) Modulated Signals Operating with Improper Carrier Phase Synchronization
Author: Mehmet S. SekerefeliPublisher:
ISBN:
Category :
Languages : en
Pages : 131
Book Description
The application of Direct Bit Detection methods are analyzed and evaluated in digital communication systems employing Differential Phase Shift Keyed (DPSK) modulation. Assuming an additive white Gaussian noise interference model, and direct bit detection methods used in the receiver, 8-DPSK and 16-DPSK communication systems are considered and their performances evaluated in terms of the delivered bit error rate as a function of signal-to-noise ratio. The advantages and disadvantages of Direct Bit Detection Receiver (DBDR) systems used in conjunction with differential phase encoding are determined, with specific application to 8-DPSK and 16-DPSK modulated signals. The effect of improper receiver carrier phase synchronization is considered in detail, and resulting performance degradations are evaluated. Numerical results show that for receiver phase errors of more than a few degrees, severe performance degradations result for both DPSK modulation schemes, unless a complete phase reversal (i.e., 180 deg.) takes place.
Synchronization and Demodulation of Differential Phase Shift Keyed Signals with Linear Surface Acoustic Wave Devices
Author: Rudolf W. BurgiThe Imperfectly-timed Demodulation of Differential Phase Shift Keyed Signals
Author: Ronald J. HuffPublisher:
ISBN:
Category :
Languages : en
Pages : 70
Book Description
The effects of bit synchronization error on the performance of receivers used to demodulate differential phase shift keyed (DPSK) signals are analyzed. In the two cases of interest considered, the carrier signal is bi-phase modulated with either the differentially encoded (binary) data stream or the modulo two sum of the encoded data stream and a binary pseudo-noise (PN) signal. The bit timing error is assumed to be Gaussian distributed. Since the effects of both non-zero timing offset and random jitter are investigated, the results provide an adequate basis for the design of synchronizers as employed, for example, in time division multiple access systems. (Author).
Enabling Technologies for Direct Detection Optical Phase Modulation Formats
Author: Xian XuPhase-Modulated Optical Communication Systems
Author: Keang-Po HoPublisher: Springer Science & Business Media
ISBN: 9780387243924
Category : Technology & Engineering
Languages : en
Pages : 452
Book Description
Fiber-optic communication systems have revolutionized our telecommunication infrastructures – currently, almost all telephone land-line, cellular, and internet communications must travel via some form of optical fibers. In these transmission systems, neither the phase nor frequency of the optical signal carries information – only the intensity of the signal is used. To transmit more information in a single optical carrier, the phase of the optical carrier must be explored. As a result, there is renewed interest in phase-modulated optical communications, mainly in direct-detection DPSK signals for long-haul optical communication systems. When optical amplifiers are used to maintain certain signal level among the fiber link, the system is limited by amplifier noises and fiber nonlinearities. Phase-Modulated Optical Communication Systems surveys this newly popular area, covering the following topics: - The transmitter and receiver for phase-modulated coherent lightwave systems - Method for performance analysis of phase-modulated optical signals - Direct-detection DPSK signal with fiber nonlinearities, degraded by nonlinear phase noise and intrachannel effects - Wavelength-division-multiplexed direct-detection DPSK signals - Multi-level phase-modulated optical signals, such as the four-phase DQPSK signal. Graduate students, professional engineers, and researchers will all benefit from this updated treatment of an important topic in the optical communications field.
Imperfect Differential Detection of a Biphase Modulated Signal
Author: Thomas William MillerPublisher:
ISBN:
Category : Differential equations
Languages : en
Pages : 194
Book Description
Phase-shift-keyed Signal Detection with Noisy Reference Signals
Author: William C. LindseyPublisher:
ISBN:
Category : Phase shift keying
Languages : en
Pages : 401
Book Description
Digital Optical Communications
Author: Le Nguyen BinhPublisher: CRC Press
ISBN: 142008206X
Category : Science
Languages : en
Pages : 610
Book Description
The need for advanced transmission techniques over long haul optically amplified communications has prompted a convergence of digital and optical communications. Digital Optical Communications explores the practical applications of this union and applies digital modulation techniques to optical communications systems.After reviewing the fundamental
Optical Performance Monitoring
Author: Calvin C. K. ChanPublisher: Academic Press
ISBN: 0080959172
Category : Technology & Engineering
Languages : en
Pages : 510
Book Description
This in-depth, detailed reference presents for the first time a comprehensive treatment of recent advances in optical performance monitoring. Written by leading experts in the field, the book provides an overview of recent developments in the area and the role of OPM in future optical systems and networks. Detailed discussions of various advanced techniques are provided to illustrate their principles. FEATURES: - Presents the principles and applications of advanced OPM techniques, together with a comparative evaluation of their effectiveness in monitoring individual parameters, such as optical signal-to-noise ratio, chromatic dispersion, and polarization mode dispersion - Explains the principles of the various advanced optical signal processing techniques and their applications in OPM - Examines the role and applications of OPM in optical networks, including optical transport networks, coherent optical systems, and long-haul optical transmission systems - Discusses the current approaches of OPM in the global standard SDH/SONET This book is ideal for technical professionals and researchers who want to understand and evaluate advanced techniques in OPM and their impact on the practical design of next-generation optical systems and networks. - Provides a thorough and detailed discussion of the latest optical performance monitoring (OPM) techniques and their applications, presenting a comparative analysis of each method - Contains high-quality technical contributions from leading experts, covering both principles and practical aspects of advanced OPM techniques - Addresses challenges and opportunities related to OPM in next-generation reconfigurable optical systems and networks