Results 201 to 210 of about 11,947 (254)

A Digital Demodulator for PSK Signals

IEEE Transactions on Communications, 1973
This paper describes a digital demodulator for phase-shift-keyed (PSK) signals in which the phase difference between the received signal and a carrier reference is found by measuring digitally the time interval between the zero crossings of the signal and the reference.
Viljo O. Hentinen, Pasi P. Laiho, Risto M. Särkilahti   +2 more
openaire   +1 more source

Demodulator of PWM signals

Measurement Techniques, 1971
The demodulator under consideration possesses high metrological properties and it can be used in systems for transmitting data.
V. F. Odinokov, L. I. Rotshtein
openaire   +1 more source

A mixed-signal GFSK demodulator for Bluetooth

IEEE Transactions on Circuits and Systems II: Express Briefs, 2006
A discrete-time mixed-signal Gaussian frequency-shift keying demodulator designed for a low intermediate frequency Bluetooth receiver performs FSK demodulation. Employing passive sampling and time-domain differentiation techniques, the demodulator performs quadrature demodulation while tolerating up to 200-kHz frequency offset.
Lee, Tai-Cheng, Chen, Chin-Chi
openaire   +1 more source

Parallel demodulation of multidimensional signals

IEEE Transactions on Communications, 1992
The design of constellations that allow a high degree of parallelism in the staged decoder structure and in addition allow soft decoding of the component algebraic codes based on a systolic algorithm amenable to VLSI implementation is considered. Combination of these multidimensional constellations with trellis-coded modulation (TCM) is also considered.
openaire   +1 more source

Coherent Demodulation of the Mud Pressure DPSK Signal and Analysis of Noise Impact on the Signal Demodulation

Applied Mechanics and Materials, 2013
Based on the mathematical analysis of band transmission signal coherent detection theory and mud pressure DPSK signal modulation process, by establishing the coherent detection mathematical model of mud pressure DPSK signal, this paper studies the practicability of broadband mud pressure DPSK signal coherent detection.
Yue Shen, Ling Tan Zhang, Shi Li Cui, Yi Nao Su, Li Min Sheng, Lin Li   +5 more
openaire   +1 more source

Teaching phase-sensitive demodulation for signal conditioning to undergraduate students [PDF]

American Journal of Physics, 2010
Phase-sensitive demodulation (PSD) is important for signal conditioning and communication. This paper introduces an approach to teaching PSD for signal conditioning to undergraduate science and engineering students.
Wuqiang Yang
exaly   +2 more sources

Demodulation of suppressed signals

Proceedings of the IEEE, 1977
A demodulator is proposed that exploits the by-produced image of a weak signal, which is suppressed by a strong interfering one in a bandpass limiter, to recover 3-dB from the well-known 6-dB weak-by-strong-signal suppression effect.
openaire   +1 more source

Blind Demodulation Framework for Satellite Signals

2011
With the growing amount of satellite traffic an efficient usage of the existing resources, i.e. geostationary arc and available frequency bands, is mandatory. Therefore appropriate monitoring techniques are of paramount importance for reasonable operation of satellite networks.
Markus Flohberger, Wilfried Gappmair, Otto Koudelka   +2 more
openaire   +1 more source

Robust demodulation of wideband signals

Journal of Communications Technology and Electronics, 2007
Asymptotically robust algorithms for demodulation of phase-modulated signals in the presence of noise with an unknown distribution are obtained on the basis of the invariance and minimax principles. Stable quality indices of the algorithms are achieved in the case when the noise level and the shape of its distribution are a priori uncertain.
V. A. Bogdanovich, A. G. Vostretsov, K. Yu. Kolomenskiy   +2 more
openaire   +1 more source

Optical demodulation of THz signals

2013 IEEE Photonics Conference, 2013
We present an all optical technique to demodulate THz signals on optical carriers using a standard optical phase modulator and an RF synthesizer. Noise floor as low as -95 dBc/Hz is reached at 700 GHz.
Joachim Borner, Gregoire Pillet, Loic Morvan, Daniel Dolfi, Katarzyna Balakier, Cyril Renaud   +5 more
openaire   +1 more source