Download or read book Performance Analysis of an Ultra Low Power MFSK System written by Yi Xiang and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, we investigate the problem of designing an ultra-low power M-ary frequency shift keying (MFSK) system. In Chapter 2, We design a communication system that operates under stringent power constraints, but is flexible with bandwidth constraints. Our approach is to consider some of the key elements in a transceiver and optimize them for low power consumption, as opposed to optimizing them to minimize, say, average probability of error. An obvious consequence of this is that high complexity components of the system, such as matched filters, forward error correction that employs iterative decoders, coherent demodulators, and bandwidth-efficient modulation formats, are not feasible for this research. Rather, our system is designed using MFSK with non-coherent detection, optimized two-pole bandpass filters (BPF), and Reed-Solomon (RS) codes with hard-decision decoding. Among other things, we show that by properly optimizing the key parameters of the BPFs and RS codes, we can design the system to be significantly less complex than an optimal one, and only lose about 1.2 dB in terms of performance. In Chapter 3, We extend the results from Chapter 2 to incorporate fast frequency hopping (FFH) and intelligent jamming. The system still operates under stringent power constraints, but is flexible with bandwidth constraints. Our system is designed using MFSK with non-coherent detection and fast frequency hopping (FFH), optimized two-pole BPF, and RS codes with hard-decision decoding. Among other things, we show that by properly optimizing the key parameters of the BPFs and RS codes, we can design the system to be significantly less complex than the MF system with a performance loss of less than 1.4 dB in terms of performance in most scenarios that we considered. Further, the 2-pole BPF system can actually outperform the corresponding MF system by up to 2.4 dB with multi-tone jamming. In Chapter 4, we extend the results from Chapter 2 to incorporate Gaussian filtering. We improve our previous design by considering the power-bandwidth tradeoff, and we show that we can save a large percentage of system bandwidth by sacrificing a small amount of power, when the demodulator and coding parameters are optimized. For example, we can save 50% of system bandwidth at the cost of 1 dB loss in performance compared to our previous system design. We quantify the performance loss as a function of both the system bandwidth saved and the time-bandwidth product of the Gaussian filter. We keep M = 16 as our baseline design, and compare the performance of the M-ary GFSK system with the corresponding MFSK system.

Download or read book Performance Analysis of FFH MFSK Under Jamming Using Diversity and Coding written by Srinivas Polavarapu and published by . This book was released on 2004 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electronics Communications and Networks written by A.J. Tallón-Ballesteros and published by IOS Press. This book was released on 2024-01-25 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is hard to imagine a world without electronic communication networks, so dependent have we all become on the networks which now exist and have become part of the fabric of our daily lives. This book presents papers from CECNet 2023, the 13th International Conference on Electronics, Communications and Networks, held as a hybrid event, in person in Macau, China and online via Microsoft Teams, from 17-20 November 2023. This annual conference provides a comprehensive, global forum for experts and participants from academia to exchange ideas and present the results of ongoing research in state-of-the-art areas of electronics technology, communications engineering and technology, wireless communications engineering and technology, and computer engineering and technology. A total of 324 submissions were received for the conference, and those which qualified by virtue of falling under the scope of the conference topics were exhaustively reviewed by program committee members and peer-reviewers, taking into account the breadth and depth of the relevant research topics. The 101 selected contributions included in this book present innovative, original ideas or results of general significance, supported by clear and rigorous reasoning and compelling new light in both evidence and method. Subjects covered divide broadly into 3 categories: electronics technology and VLSI, internet technology and signal processing, and information communication and communication networks. Providing an overview of current research and developments in these rapidly evolving fields, the book will be of interest to all those working with digital communications networks.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Analysis of Frequency Hopping MFSK M ary Frequency Shift Keying Systems Employing Forward Error Control Coding in the Presence of Hostile Interference written by Jhong S. Lee and published by . This book was released on 1987 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Error probability analyses are performed for a coded M-ary frequency-shift-keying (MFSK) system employing L hops per M-ary word frequency-hopping (FH) spread spectrum waveforms transmitted over a partial-band Gaussian noise jamming channel. The information bit error probabilities are obtained for a square-law linear combining demodulator and for a square-law adaptive gain control (AGC) demodulator, both with forward error control (FEC) coding under conditions of worst-case partial-band noise jamming, using exact analyses of the demodulator performance which include both thermal noise and jamming noise. Parametric performance curves are obtained for both block codes and convolutional codes with both binary and M-ary channel modulations. The results show that thermal noise can not be neglected in the analyses if correct determinations of the optimum order of diversity and the worst-case jamming fraction are to be obtained over the whole range of signal-to-thermal noise and signal-to-jamming ratios. It is shown that the combination of non-linear combining, M-ary modulation, and forward error control coding is an effective strategy against worst-case partial-band noise jamming. However, just as was found to be the case for uncoded systems, the linear combiner is ineffective in worst-case partial-band noise jamming. (Author).

Download or read book Performance Analysis of Reed Solomon Coded Fast Frequency hopped MFSK Systems with Multitone Jamming and AWGN Over Fading Channels written by Wei Xia and published by . This book was released on 2002 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wireless Multimedia Network Technologies written by Rajamani Ganesh and published by Springer Science & Business Media. This book was released on 2006-04-18 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of invited papers that were presented at the Ninth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, September 5-8, 1998, Boston, MA. These papers are meant to provide a global view of the emerging third-generation wireless networks in the wake of the third millennium. Following the tradition of the PIMRC conferences, the papers are selected to strike a balance between the diverse interests of academia and industry by addressing issues of interest to the designers, manufacturers, and service providers involved in the wireless networking industry. The tradition of publishing a collection of the invited papers presented at the PIMRC started in PIMRC’97, Helsinki, Finland. There are two benefits to this tradition (1) it provides a shorter version of the proceedings of the conference that is more focused on a specific theme (2) the papers are comprehensive and are subject of a more careful review process to improve the contents as well as the presentation of the material, making it more appealing for archival as a reference book. The production costs of the book is subsidized by the conference and the editors have donated the royalty income of the book to the conference.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1987 with total page 1448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 28th Conference of Spacecraft TT C Technology in China written by Rongjun Shen and published by Springer. This book was released on 2017-07-25 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects selected papers from the 28th Conference of Spacecraft TT&C Technology in China held on November 8-10, 2016. The book features state-of-the-art studies on spacecraft TT&C in China with the theme of “Openness, Integration and Intelligent Interconnection”. To meet requirements of new space endeavors, development of spacecraft instrumentation systems have to follow an open concept and approach in China. An open spacecraft instrumentation system encompasses integrated development of different types of services, integration of disciplines and specialties, intelligent links, and more scientific and intelligent information interface technology. Researchers and engineers in the field of aerospace engineering and communication engineering can benefit from the book.

Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1990 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 39 (thesis year 1994) a total of 13,953 thesis titles from 21 Canadian and 159 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 39 reports theses submitted in 1994, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1987-10 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chinese Journal of Electronics written by and published by . This book was released on 2006 with total page 798 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 1991 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 1948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NTC 1979 Conference Record written by and published by . This book was released on 1979 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cities and Their Vital Systems written by Advisory Committee on Technology and Society and published by National Academies Press. This book was released on 1989 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.