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FQPSK Doubles Spectral Efficiency of Telemetry: Advances and Initial Air to Ground Flight TestsFeher, Kamilo 10 1900 (has links)
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / FQPSK is the abbreviation for Feher Quadrature Phase Shift Keying (FQPSK)
patented systems [1]. Digcom, Inc. licensed FQPSK products demonstrated significant
spectral saving and RF power efficient robust BER performance advantages. These bit
rate agile modems and Non Linearly Amplified (NLA) transceivers, DSP and hardware
implementations, and in some instances “software-radios” (20kb/s to more than 100Mb/s)
and RF frequency agile (from 150MHz to more than 40GHz) developments and systems
have recently been demonstrated and deployed. The spectral efficiency, i.e., data
throughput capability of the 1st generation of FQPSK, as demonstrated in initial Advanced
Range Telemetry (ARTM) flight tests, approximately doubles while 2nd generation
“FQPSK-2” systems have the potential to quadruple the spectral efficiency of operational
PCM/FM telemetry systems and be backward compatible with the 1st generation of
FQPSK technologies. It is also demonstrated that the spectral efficiency advantage of
FQPSK over that of NLA power efficient GMSK, OQPSK and QPSK modulated
transceivers is in the 50% to 300% range and that the potential spectral efficiency
advantage of FQPSK-2 over GMSK [1] is in the 200% to 500% range.
Based on extensive multi-year studies of alternative solutions for spectral and RF
power efficient, robust BER performance systems, several commercial US and
international organizations, AIAA, CCSDS, NASA, ESA, CCSDS and various programs
of the US Department of Defense (DoD) concluded that FQPSK offers the most
spectrally efficient high performance-high speed proven technology solutions and
recommended FQPSK standardization for several data links. Initial DoD-ARTM Program
Office Air-to-Ground L-band and S-band jet airborne telemetry Test and Evaluation
(T&E) data, obtained during the summer of 1998 are briefly highlighted. These include
simultaneosly tested FQPSK and PCM/FM. In these tests the following ARTM objectives
have been demonstrated: (a) FQPSK approximately doubles the spectral efficiency of
currently operational PCM/FM; (b) The Data Link Performance of these two systems is
comparable. The American Institute of Aeronautics and Astronautics (AIAA) draft
modulation standard recommended to the DoD, NASA and CCSDS, was approved by
the AIAA [23]. The AIAA standard recommends “that FQPSK modulation be
immediately adopted as the interim increment–1 standard.”
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ADVANCED RANGE TELEMETRY (ARTM) TIER I COMPATIBLE DEMODULATOR TESTING AND RESULTSTemple, Kip 10 1900 (has links)
International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / The Nova HYPERMOD demodulator operates in three modes, the classic pulse-code
modulation/frequency modulation (PCM/FM), sometimes known as continuous phase frequency shift
keying (CPFSK) mode, shaped offset quadrature phase shift keying (SOQPSK) mode, and continuous
phase modulation (CPM) mode. Of interest to this paper is SOQPSK mode which is a waveform similar
to the Advanced Range Telemetry (ARTM) Tier I waveform, Feher’s Quadrature Phase Shift Keying, B
version (FQPSK-B) revision (Rev) A1. Also considered is another variant, FQPSK-JR. This paper
will outline the cross compatibility and resynchronization speed of these waveforms based upon
ARTM-adopted demodulator performance tests. The results of these laboratory tests comparing the
HYPERMOD demodulator, the enhanced Tier I demodulator, and the current Tier I reference
demodulator, both from RF Networks, will be presented.
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As patentes no Sistema Agroindustrial Brasileiro e os produtos Brasileiros patenteados por estrangeiros. / Patents in the Brazilian Agroindustrial System and Brazilian products patented by foreigners.VASGAS, Xangai Gustavo. 25 May 2018 (has links)
Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-05-25T19:24:37Z
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XANGAI GUSTAVO VARGAS - DISSERTAÇÃO PPGSA PROFISSIONAL 2017..pdf: 676716 bytes, checksum: 48cfadb315e5a3c32d03d47d75c48022 (MD5)
Previous issue date: 2017 / Sabe-se que a Amazônia é um berço natural da fauna e flora mundial. Desta forma
desperta interesses e cobiças dos mais variados povos estrangeiros. Nas últimas
décadas tem-se notado o número crescente de produtos naturais amazônicos
patenteados por empresas e nações estrangeiras como se fossem produtos
originários daquele lugar. Desta forma, o objetivo do trabalho é realizar estudo sobre
patentes de produtos amazônicos e seus aspectos jurídicos, dado ao quadro
crescente de biopirataria que vem ocorrendo na Amazônia, o grande aumento de
contrabando de plantas, derrubada de árvores nativas e até mesmo apropriação
indevida de produtos originários nesta parte do planeta. Várias ONGs, associações,
entidades e pessoas camuflam-se para buscar aqui o que é riqueza do povo
amazonense. E assim, é necessário que o governo aumente a fiscalização fronteiriça,
estreite os paralelos judiciais e medidas contra tal situação. Dentro do contexto, serão
tratados assuntos pertinentes ao tema do trabalho, com isso espera-se que a pesquisa
satisfaça pelo menos em parte, acentue e instigue a necessidade e tomada de
providências. / It is known that the Amazon is a natural cradle of flora and fauna worldwide. Thus
awakens desires and interests of various foreign peoples. In recent decades it has
been noticed the increasing number of natural products Amazon patented by
corporations and foreign nations like products originating from that place. Thus, the
objective is to conduct study on patents for Amazon products and their legal, given the
growing cadre of biopiracy that has been occurring in the Amazon, the great increase
in smuggling of plants, felling of native trees and even misappropriation of products
originating in this part of the planet. Several NGOs, associations, organizations and
persons camouflage themselves to look here what is the people's wealth Amazon. And
so, it is necessary that the government, increase thereby border surveillance, narrow
the parallels and judicial measures against such great absurdity. Within the context will
be treated matters pertaining to the subject of study, it is expected that satisfies not in
all, but at least partially, thereby sharpen and instigates the need and outlet
arrangements.
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The replacement of the doctrine of pith and marrow by the catnic test in English Patent Law : a historical evaluationZondo, Raymond Mnyamezeli Mlungisi 02 1900 (has links)
This dissertation is a historical evaluation of the movement of the English courts from the doctrine of pith and marrow to the Catnic test in the determination of non-textual infringement of patents. It considers how and why the doctrine was replaced with the Catnic test. It concludes that this movement occurred as a result of the adoption by a group of judges of literalism in the construction of patents while another group dissented and maintained the correct application of the doctrine. Although the Court of Appeal and the House of Lords initially approved the literalist approach, they, after realising its untennability, adopted the dissenters’ approach, but, ultimately, adopted the Catnic test in which features of the dissenters’ approach were included. The dissertation concludes that the doctrine of pith and marrow, correctly applied, should have been retained as the Catnic test creates uncertainty and confusion. / Mercantile Law / LL.M.
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The replacement of the doctrine of pith and marrow by the catnic test in English Patent Law : a historical evaluationZondo, Raymond Mnyamezeli Mlungisi 02 1900 (has links)
This dissertation is a historical evaluation of the movement of the English courts from the doctrine of pith and marrow to the Catnic test in the determination of non-textual infringement of patents. It considers how and why the doctrine was replaced with the Catnic test. It concludes that this movement occurred as a result of the adoption by a group of judges of literalism in the construction of patents while another group dissented and maintained the correct application of the doctrine. Although the Court of Appeal and the House of Lords initially approved the literalist approach, they, after realising its untennability, adopted the dissenters’ approach, but, ultimately, adopted the Catnic test in which features of the dissenters’ approach were included. The dissertation concludes that the doctrine of pith and marrow, correctly applied, should have been retained as the Catnic test creates uncertainty and confusion. / Mercantile Law / LL. M.
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DIGITAL RECEIVER PERFORMANCETroublefield, Robert C. 10 1900 (has links)
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / Bit errors often occur in a wireless communications link when impairments alter the transmitted signal.
It is advantageous to be able to predict how well a system will tolerate transmission problems. This
paper details laboratory performance measurements and comparisons in terms of evaluating
configurations of a digital receiver for Feher patented Quadrature Phase Shift Keying (FQPSK-B)
demodulation. The transmitted signal is subjected to calibrated levels of impairments while the receiver
performance is monitored in real-time.
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