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94 GHz phase-shift-keying modulator
International Journal of Infrared and Millimeter Waves, 1996This paper describes a kind of low insertion loss phase-shift-keying modulators used in 94GHz digital communications systems. A BPSK modulator with a insertion loss lower than 3.8dB has been achieved by connecting a circulator and a fin-line PIN diode phase shifter in series. The bandwidth is 2.5GHz given a phase error of ±50.
Liquan He, Fei Hong, Yong Li
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Performance of skewed phase shift keying
Proceedings of ICC/SUPERCOMM '96 - International Conference on Communications, 2002Source-matched digital transmission techniques are proposed to maximize robustness, recovered signal quality, as well as bandwidth efficiency. Miki et al. (1993) proposed a pseudo-analog transmission technique where adaptive differential pulse code modulation (ADPCM) samples were transmitted using nonsymmetric skewed differential phase shift keying ...
X. Lin, W.C. Wong, C.-E.W. Sundberg
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Quantum M-ary phase shift keying
2012 IEEE International Symposium on Information Theory Proceedings, 2012We develop a theory of quantum M-ary phase shift keying in which quantum states of optical modes are modulated at the transmitter by applying one of M uniformly-spaced phase shifts. We allow full freedom in choosing modulation states with any number of signal, i.e., transmitted, and ancilla modes, subject only to an average energy, i.e., photon number,
Ranjith Nair +4 more
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Ultrasonic MODEM by Phase Shift Keying
Japanese Journal of Applied Physics, 1987A method of realizing an ultrasonic MODEM by binary phase shift keying using two Lamb wave devices is described. The device operates as a phase shifter for constructing a binary phase shifted modulation signal, and as a comparator with a reference synchronous signal for demodulation.
Koichi Mizutani, Kohji Toda
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2016
In phase shift keying (PSK), the phase of the carrier changes in discrete levels in accordance with the input digital signal, while the amplitude of the carrier remains the same. In this chapter, the PSK modulation will be presented, along with the respective spectrum and bandwidth.
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In phase shift keying (PSK), the phase of the carrier changes in discrete levels in accordance with the input digital signal, while the amplitude of the carrier remains the same. In this chapter, the PSK modulation will be presented, along with the respective spectrum and bandwidth.
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Differential phase-shift-keyed transmission
SPIE Proceedings, 2005Differential phase-shift keying (DPSK) has recently attracted a great deal of attention especially for high-speed, long-haul transmission systems. The reason is that, compared to conventional on-off keying (OOK), this format offers ~3 dB better receiver sensitivity and higher tolerance to some fiber nonlinearities.
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Continuous phase-shift quantum key distribution
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009Quantum key distribution (QKD) is a procedure of information exchange between two parties, the sender Alice and the receiver Bob, which allows to distribute the absolutely secure data between them [1,2]. The distinctive part of QKD with respect to classical communication is use of a quantum information channel, where carriers of information are ...
Denis Sych, Gerd Leuchs
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Attacking Phase Shift Keying Based Watermarking
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2007The letter describes a phase perturbation attack to the Discrete Fourier Transform (DFT) and Phase Shift Keying (PSK) based watermarking scheme which is proposed in [3]. In that paper the watermark information is embedded in the phase of the DFT coefficients.
J.-S. PAN, C. LIN
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On The Performance of Phase-Shift-Keying Systems
Bell System Technical Journal, 1981Coherent phase-shift keying (CPSK) and differential phase-shift keying (DPSK) are widely used modulation methods in digital communications. Bandwidth efficiency, good noise immunity, constant envelope, and simplicity of implementation make these schemes particularly attractive for use over the satellite, terrestrial radio and voiceband telephone ...
Prabhu, V. K., Salz, J.
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Signal activity detection of phase-shift keying signals
IEEE Transactions on Communications, 2006We propose computationally inexpensive and efficient solutions for signal activity detection of phase-shift keying (PSK) signals in additive white Gaussian noise. We consider the complex amplitude of the signal as well as the information sequence as the unknown parameters. In addition, the noise variance is assumed unknown.
A.A. Tadaion +4 more
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