Author: Ezio BiglieriPublisher:
ISBN:
Category :
Languages : en
Pages : 198
Book Description
Study on the Applicability of Quadrature-quadrature Phase Shift Keying to Space Communications
Author: Ezio BiglieriConventional and Offset Quadrature Phase-shift Keying (QPSK & O-QPSK) for Digital Communications by Satellite
Author: Elias PsarrasPublisher:
ISBN:
Category : Artificial satellites in telecommunication
Languages : en
Pages : 0
Book Description
Quadrature Phase Shift Keying (QPSK/DQPSK)
Author: Lab-Volt (Quebec) LtdPublisher:
ISBN: 9782896401369
Category :
Languages : en
Pages : 87
Book Description
Bandwidth-Efficient Digital Modulation with Application to Deep Space Communications
Author: Marvin K. SimonPublisher: John Wiley & Sons
ISBN: 0471726184
Category : Technology & Engineering
Languages : en
Pages : 244
Book Description
An important look at bandwidth-efficient modulations with applications to today's Space program Based on research and results obtained at the California Institute of Technology's Jet Propulsion Laboratory, this timely book defines, describes, and then delineates the performance (power and bandwidth) of digital communication systems that incorporate a wide variety of bandwidth-efficient modulations appropriate for the design and implementation of space communications systems. The author compares the performance of these systems in the presence of a number of practical (non-ideal) transmitter and receiver characteristics such as modulator and phase imbalance, imperfect carrier synchronization, and transmitter nonlinearity. Although the material focuses on the deep space applications developed at the Jet Propulsion Laboratory, the presentation is sufficiently broad as to be applicable to a host of other applications dealing with RF communications. An important contribution to the scientific literature, Bandwidth-Efficient Digital Modulation with Application to Deep Space Communications * was commissioned by the JPL Deep Space Communications and Navigation System Center of Excellence * highlights many NASA-funded technical contributions pertaining to deep space communications systems * is a part of the prestigious Deep Space Communications and Navigation Series The Deep Space Communications and Navigation Series is authored by scientists and engineers with extensive experience in astronautics, communications, and related fields. It lays the foundation for innovation in the areas of deep space navigation and communications by disseminating state-of-the-art knowledge in key technologies.
Quadrature Phase Shift Keying (QPSK/DQPSK).
Author: Scientific and Technical Aerospace Reports
Author: Performance Analysis of Direct-Sequence Code-Division Multiple-Access Communications with Asymmetric Quadrature Phase-Shift-Keying Modulation
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781720659761
Category :
Languages : en
Pages : 40
Book Description
This article considers a quaternary direct-sequence code-division multiple-access (DS-CDMA) communication system with asymmetric quadrature phase-shift-keying (AQPSK) modulation for unequal error protection (UEP) capability. Both time synchronous and asynchronous cases are investigated. An expression for the probability distribution of the multiple-access interference is derived. The exact bit-error performance and the approximate performance using a Gaussian approximation and random signature sequences are evaluated by extending the techniques used for uniform quadrature phase-shift-keying (QPSK) and binary phase-shift-keying (BPSK) DS-CDMA systems. Finally, a general system model with unequal user power and the near-far problem is considered and analyzed. The results show that, for a system with UEP capability, the less protected data bits are more sensitive to the near-far effect that occurs in a multiple-access environment than are the more protected bits.Wang, C.-W. and Stark, W.Jet Propulsion LaboratoryQUADRATURE PHASE SHIFT KEYING; BINARY PHASE SHIFT KEYING; ASYMMETRY; CODE DIVISION MULTIPLE ACCESS; PHASE SHIFT KEYING; MULTIPLE ACCESS; PROTECTION; RELIABILITY ANALYSIS
Recent Trends in Wireless and Mobile Networks
Author: Abdulkadir ÖzcanPublisher: Springer Science & Business Media
ISBN: 3642219365
Category : Computers
Languages : en
Pages : 443
Book Description
This book constitutes the refereed proceedings of the Third International Conference on Wireless, Mobile Networks, WiMo 2011, and of The Third International Conference on Computer Networks and Communications, CoNeCo 2011, held in Ankara, Turkey, in June 2011. The 40 revised full papers presented were carefully reviewed and selected from 202 submissions.
Quadrature Phase Shift Keying (QPSK/DQPSK).
Author: Differentially Encoded Quadrature Phase Shift Key Communication and Real-time Implementation
Author: Robert Walton ConantPublisher:
ISBN:
Category : Digital communications
Languages : en
Pages : 202
Book Description