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Real-time coherent optical receivers: Theoretical description and real-time implementation of digital signal processing algorithms for coherent optical receivers download epub

by Timo Pfau


Epub Book: 1992 kb. | Fb2 Book: 1438 kb.

The real-time implementation of digital coherent receivers for 100 Gbit/s data rates and beyond pushes the limits . In this paper, blind and data-aided receivers are compared for coherent single-carrier optical systems in terms of complexity, tracking ability, and convergence speed.

The real-time implementation of digital coherent receivers for 100 Gbit/s data rates and beyond pushes the limits of all the technologies involved. This chapter describes the main constraints put on the digital signal processing (DSP) algorithms by the hardware structure, and provides a brief overview on technologies and challenges for prototype and commercial real-time implementations of coherent receivers.

Implementation of real-time giga-Baud optical coherent systems for single-carrier higher-level modulation .

Implementation of real-time giga-Baud optical coherent systems for single-carrier higher-level modulation format such as 64-quadrature amplitude modulation (QAM) depends heavily on phase tracking. For offline digital signal processing, decision-directed phase recovery is performed at symbol rate with the best performance and the least computational effort compared among other best-known algorithms. An improved coherent optical receiver architecture that compensates for a random drift in the state of polarization (SOP) of both the signal and the local oscillator (LO) is presented for the first time.

PDF The implementation of algorithms for coherent detection of advanced modulation formats imposes . Real-time constraints for receiver DSP algorithms. Digital signal processing for. coherent optical receivers.

PDF The implementation of algorithms for coherent detection of advanced modulation formats imposes constraints. A hardware-efficient phase estimator is presented, and measurement results with a CMOS receiver chip designed for 40 Gb/s digital coherent exed QPSK. R. Noé 7. Feasibility of parallel processing.

Real-time coherent optical receivers: Theoretical description and real-time implementation of digital signal processing algorithms for coherent optical receivers. Sudwestdeutscher Verlag Fur Hochschulschriften AG, Omniscriptum Gmbh & Co. Kg. Book Format.

The high data rates in optical communication generate stringent constraints on algorithms and technologies suitable for real-time coherent . Pfau . Noé R. (2010) Real-Time Digital Coherent QPSK Transmission Technologies.

The high data rates in optical communication generate stringent constraints on algorithms and technologies suitable for real-time coherent optical receivers based on digital signal processing (DSP). In: Nakazawa . Kikuchi . Miyazaki T. (eds) High Spectral Density Optical Communication Technologies. Optical and Fiber Communications Reports, vol 6. Springer, Berlin, Heidelberg. First Online 30 June 2010.

cle{Pfau2014CarrierRA, title {Carrier recovery algorithms and real-time DSP . Phase noise is the most dynamic distortion in coherent optical transmission systems.

cle{Pfau2014CarrierRA, title {Carrier recovery algorithms and real-time DSP implementation for coherent receivers}, author {Timo Pfau}, journal {OFC 2014}, year {2014}, pages {1-17} }. Timo Pfau. Published in OFC 2014. The choice between blind and pilot-based carrier recovery is not obvious. Blind carrier recovery requires no overhead and achieves maximum phase noise tolerance, but requires differential coding and complex processing.

Digital sed coherent optical communication systems are widely viewed as the most promising next-generation long-haul transport systems.

The digital coherent receivers combine coherent detection with digital signal processing (DSP) to compensate for transmission impairments, and therefore are a promising candidate for future high-speed optical transmission system

The digital coherent receivers combine coherent detection with digital signal processing (DSP) to compensate for transmission impairments, and therefore are a promising candidate for future high-speed optical transmission system. However, the maximum symbol rate supported by such real-time receivers is limited by the processing rate of hardware. In this paper, we propose a novel parallel digital timing recovery loop (PDTRL) based on our previous work.

from the standpoint of digital signal processing

Digital Communication Receivers Synchronization, Channel Estimation, and Signal Processing Digital Communication Receivers offers a complete treatment on the theoretical and practical aspects of synchronization and channel estimation from the standpoint of digital signal processing. The material is structured according to different classes of transmission channels

The continuous increase of the worldwide data traffic demands new concepts for data transmission in the optical fiber-based backbone networks. One promising way to increase the capacity of the existing fiber infrastructure is to use quadrature amplitude modulation (QAM) in combination with polarization-multiplexing and coherent detection. In this book all necessary algorithms are presented that are required for the realization of such a system using digital signal processing at the receiver. The main focus thereby lies on the algorithms for polarization control and carrier recovery. But also clock recovery, intermediate frequency control and compensation of intersymbol interference are considered. The performance of the algorithms is studied in extensive simulations. Additionally the results of the real-time implementation of selected algorithms in a single polarization and a polarization-multiplexed synchronous optical QPSK transmission system are presented. Both systems are the worldwide first that are realized with a real-time coherent digital receiver and standard DFB lasers.
Real-time coherent optical receivers: Theoretical description and real-time implementation of digital signal processing algorithms for coherent optical receivers download epub
Engineering
Author: Timo Pfau
ISBN: 383810594X
Category: Engineering & Transportation
Subcategory: Engineering
Language: English
Publisher: Suedwestdeutscher Verlag fuer Hochschulschriften (April 26, 2009)
Pages: 140 pages