Patent
Modulator for generating a burst-like modulated wave
TLDR
In this paper, the envelope of the burst-like modulated wave can be changed gradually at the carrier on/off timing in order to reduce the interference of the modulated waves with the adjacent channels without degrading the transmission efficiency.Abstract:
A modulator for generating a burst-like modulated wave used in a multi-carrier transmission type communication system in which a plurality of modulated waves including at least one burst-like modulated wave exist on the same transmission line and the frequency band occupied by energy of each of the plurality of modulated waves is limited. Polarities of the transmission code which appear before and after either of on-timing and off-timing of the carrier on/off switched to obtain the burst-like modulated wave among the plurality of modulated waves are inverted to each other, whereby the envelope of the burst-like modulated wve can be changed gradually at the carrier on/off timing in order to reduce the interference of the modulated wave with the adjacent channels without degrading the transmission efficiency.read more
Citations
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References
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Patent
Fsk or fm burst signal generating apparatus
TL;DR: In this paper, a burst signal generating method and apparatus for use in a TDMA communication system was described. But the method and the apparatus were not discussed. But they were used to suppress the carrier wave during the pauses of burst signals.
Patent
A digital burst signal transmission system
TL;DR: In this article, the authors proposed a digital burst signal transmission system for MD-TDM and TDMA communication systems, which consists of a first means (62) for generating a first burst control signal (83), e.g. synchronized with an input digital signal, and a second means (59) gates the frequency-limited digital burst signals (74) in response to said second burst control signals (84).
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Digitized quadrature phase shift keying modulator
Kazuo Yagi,Tadayuki Kamisaka +1 more
TL;DR: In this article, a digitized quadrature phase shift keying modulator capable of making the modulation output frequency variable and sufficing a single ROM of waveform shaping digital filter with look-up table by using interpolators which re-sample waveforms of impulse response of each of the output I data and Q data from the digital filter to change the sampling rate.
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Paper-feeding mechanism for printer
TL;DR: In this article, a paper-feeding mechanism for a printer by which a paper feed pitch for a printing paper can be easily changed, by controlling the paperfeed pitch for the printing paper by regulating the number of pulses outputted to a pulse motor.