Download or read book On the Performance of Trellis Coded Modulation with Octal Phase Shift Keying Over the Tdrss Channel written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-10 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the National Aeronautics and Space Administration moves into the 21st century with programs like Space Station Freedom, a manned mission to Mars, and the new Landsat mission, transmission demands on the Tracking and Data Relay Satellite System (TDRSS) will very likely exceed the available bandwidth. The Manual Lujan, Jr. Center for Space Telemetering and Telecommunications Systems (CSTTS) at New Mexico State University (NMSU) is studying techniques for increasing the data rate capabilities of TDRSS. These techniques include the use of advanced bandwidth efficient modulation formats to increase the data rate that can be sustained in a TDRSS transponder and the use of lossless bandwidth compression of the data to be transmitted to lower the data rate required from the user spacecraft. Based upon current technology the most promising bandwidth efficient modulation technique is Trellis Coded Modulation (TCM) operating with Octal Phase shift Keying (8PSK). Trellis Coded Modulation coding with 8PSK carrier modulation has the capability to increase the data rate which can be transmitted through the TDRSS spacecraft by a factor of 2 to 2.5 times that available with todays coded QPSK systems with only a small penalty in link performance relative to the existing systems. However, before NASA can safely employ TCM coding it is necessary to prove that this complex format can perform on the real TDRSS link as it does in labs and simulation studies. This proof-of-concept test over a live satellite channel was the objective of the construction and testing performed under this task of the NMSU NASA grant referenced above. In conjunction with NASA, NMSU's CSTTS has constructed a system to test a new candidate TDRSS modulation scheme, TCM 8PSK, that can enhance the information throughput of the TDRSS spacecraft. The test system for this project which was constructed over a period of 18 months by NMSU consisted of two racks of commercial and univeristy-designed and -built equipment...

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1993-12 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1993 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Download or read book 1995 IEEE 14th Annual International Phoenix Conference on Computers and Communications written by IEEE Communications Society and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1995 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MILCOM 93 written by and published by . This book was released on 1993 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conference Record written by and published by . This book was released on 1993 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1993-04 with total page 1774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1996 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Download or read book Satellite Situation Report written by Goddard Space Flight Center. Office of Public Affairs and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Theory Coding and Cryptography written by Arijit Saha and published by Pearson Education India. This book was released on 2013 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information Theory, Coding & Cryptography has been designed as a comprehensive book for the students of engineering discussing Source Encoding, Error Control Codes & Cryptography. The book contains the recent developments of coded modulation, trellises for codes, turbo coding for reliable data and interleaving. The text balances the mathematical rigor with exhaustive amount of solved, unsolved questions along with a database of MCQs.

Download or read book Digital Modulation Techniques in an Interference Environment written by Kamilo Feher and published by . This book was released on 1977 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Center for Space Telemetering and Telecommunications Systems written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-09-21 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report comprises the final technical report for the research grant 'Center for Space Telemetering and Telecommunications Systems' sponsored by the National Aeronautics and Space Administration's Goddard Space Flight Center. The grant activities are broken down into the following technology areas: (1) Space Protocol Testing; (2) Autonomous Reconfiguration of Ground Station Receivers; (3) Satellite Cluster Communications; and (4) Bandwidth Efficient Modulation. The grant activity produced a number of technical reports and papers that were communicated to NASA as they were generated. This final report contains the final summary papers or final technical report conclusions for each of the project areas. Additionally, the grant supported students who made progress towards their degrees while working on the research.Horan, S. and DeLeon, P. and Borah, D. and Lyman, R.Goddard Space Flight CenterCOMMUNICATION NETWORKS; PROTOCOL (COMPUTERS); SPACE COMMUNICATION; MULTICHANNEL COMMUNICATION; SIGNAL PROCESSING; WIRELESS COMMUNICATION; SATELLITE CONSTELLATIONS; FREQUENCY MODULATION; CONFIGURATION MANAGEMENT; GROUND STATIONS; SATELLITE COMMUNICATION; RESEARCH AND DEVELOPMENT...

Download or read book Application Software Interface written by and published by Information Gatekeepers Inc. This book was released on with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Application Specific Integrated Circuits written by Michael Smith and published by Addison-Wesley Professional. This book was released on 1997-06-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book on application-specific integrated circuits (ASICs) describes the latest methods in VLSI-systems design. ASIC design, using commercial tools and pre-designed cell libraries, is the fastest, most cost-effective, and least error-prone method of IC design. As a consequence, ASICs and ASIC-design methods have become increasingly popular in industry for a wide range of applications. The book covers both semicustom and programmable ASIC types. After describing the fundamentals of digital logic design and the physical features of each ASIC type, the book turns to ASIC logic design - design entry, logic synthesis, simulation, and test - and then to physical design - partitioning, floorplanning, placement, and routing. You will find here, in practical well-explained detail, everything you need to know to understand the design of an ASIC, and everything you must do to begin and to complete your own design. Features Broad coverage includes, in one information-packed volume, cell-based ICs, gate arrays, field-programmable gate arrays (FPGAs), and complex programmable logic devices (PLDs). Examples throughout the book have been checked with a wide range of commercial tools to ensure their accuracy and utility. Separate chapters and appendixes on both Verilog and VHDL, including material from IEEE standards, serve as a complete reference for high-level, ASIC-design entry. As in other landmark VLSI books published by Addison-Wesley - from Mead and Conway to Weste and Eshraghian - the author's teaching expertise and industry experience illuminate the presentation of useful design methods. Any engineer, manager, or student who is working with ASICs in a design project, or who is simply interested in knowing more about the different ASIC types and design styles, will find this book to be an invaluable resource, reference, and guide.

Download or read book Coding and Modulation for Digital Television written by Gordon M. Drury and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coding and Modulation for Digital Television presents a comprehensive description of all error control coding and digital modulation techniques used in Digital Television (DTV). This book illustrates the relevant elements from the expansive theory of channel coding to how the transmission environment dictates the choice of error control coding and digital modulation schemes. These elements are presented in such a way that both the `mathematical integrity' and `understanding for engineers' are combined in a complete form and supported by a number of practical examples. In addition, the book contains descriptions of the existing standards and provides a valuable source of corresponding references. Coding and Modulation for Digital Television also features a description of the latest techniques, providing the reader with a glimpse of future digital broadcasting. These include the concepts of soft-in-soft-out decoding, turbo-coding and cross-correlated quadrature modulation, all of which will have a prominent future in improving efficiency of the next generation DTV systems. Coding and Modulation for Digital Television is essential reading for all undergraduate and postgraduate students, broadcasting and communication engineers, researchers, marketing managers, regulatory bodies, governmental organizations and standardization institutions of the digital television industry.