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Design and Implementation of a Binary Phase-Shift Keying Frequency Diverse Array: Considerations and Challenges. [PDF]

Sensors (Basel)
Munson NR, Correll B, Henry JKA, Narayanan RM, Bufler TD.   +4 more
europepmc   +1 more source

A State-Space Framework for Parallelizing Digital Signal Processing in Coherent Optical Receivers. [PDF]

Sensors (Basel)
Wang J, Wang Z, Liu D.
europepmc   +1 more source

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Experimental demonstration of microring quadrature phase-shift keying modulators

Optics Letters, 2012
Advanced optical modulation formats are a key technology to increase the capacity of optical communication networks. Mach-Zehnder modulators are typically used to generate various modulation formats. Here, we report the first experimental demonstration of quadrature phase-shift keying (QPSK) modulation using compact microring modulators.
Po, Dong, Chongjin, Xie, Long, Chen, Nicolas K, Fontaine, Young-kai, Chen   +4 more
openaire   +4 more sources

Quadrature-quadrature phase-shift keying

IEEE Transactions on Communications, 1989
Quadrature-quadrature phase-shift keying (Q/sup 2/PSK) is a spectrally efficient modulation scheme which utilizes available signal space dimensions in a more efficient way than two-dimensional schemes such as QPSK and MSK (minimum-shift keying). It uses two date shaping pulses and two carriers, which are pairwise quadrature in phase, to create a four ...
D. Saha, T.G. Birdsall
  +5 more sources

Trellis Coded Quadrature-Quadrature Phase Shift Keying

MILCOM 1987 - IEEE Military Communications Conference - Crisis Communications: The Promise and Reality, 1987
Integrated modulation and coding due to Ungerboeck observed no significant effect of dimensionality of signal space on the coding gain; it appeared unlikely that signals in more than two dimensions could have advantages. In this paper, it is pointed out that the utilization of all available signal space dimensions may bring further improvement in the ...
Fei Wang, Jian Liu, Shuai Wang
openaire   +2 more sources

Synchronization of quadrature-quadrature phase-shift keying signals

IEEE Transactions on Communications, 1992
The key synchronization aspects in the system design of a QQPSK (quadrature-quadrature phase-shift-keying) modem are addressed. The sensitivity of the data demodulator to synchronization errors is discussed, and contextually the performances of some IF and baseband carrier phase and symbol timing recovery schemes are evaluated both theoretically and by
De Gaudenzi, Riccardo, Luise, Marco
openaire   +2 more sources

Wideband acoustic communication using quadrature-phase shift keying and eight-phase shift keying

The Journal of the Acoustical Society of America, 2006
In JAMSTEC, a short-range (up to 500 m) high-speed acoustic communication system for deep sea environment has been investigating. To widen a bandwidth, the new wideband projector was developed. It consists of two transducer elements and has a toroidal beam pattern.
Hiroshi Ochi, Yoshitaka Watanabe, Takuya Shimura   +2 more
openaire   +1 more source

Digital coherent quadrature phase-shift-keying (QPSK)

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference, 2006
Conventional coherent detection attempts to synchronize local lasers with transmit lasers indiscriminately without considering individual noise contributors. Handling each contributor properly, we proposed a novel approach for quadrature-phase-shift-keying to enable realization of coherent communication without need of synchronization.
U. Koc, A. Leven, Y. Chen, N. Kaneda
openaire   +1 more source