Results 201 to 210 of about 24,219 (229)

Chemical exfoliation of layered Al₅C₃N for the synthesis of AlN nanosheets. [PDF]

Commun Mater
Amousa N, Poll M, Godeffroy L, Berastegui P, Nickel NH, Sharma N, Donzel-Gargand O, Dittrich T, Fengler S, Wintz S, Petit T, Jansson U, Gonzalez-Julian J.   +12 more
europepmc   +1 more source

3D atomic structure reveals evolution of prions in templated amplification in vitro

Bieschke J, Wenborn A, Chatzitheodosiou I, Jack K, Batchelor M, Chen L, Ahmed P, Thirlway G, Manka S, Jackson G, Wadsworth J, Collinge J.   +11 more
europepmc   +1 more source

Trellis-coded quantization/modulation over mobile satellite channels with imperfect phase reference [PDF]

International Journal of Satellite Communications and Networking, 1998
In this paper the bit error performance of trellis-coded quantization/modulation (TCQ/TCM) schemes is derived taking into account the quantization noise over mobile satellite channels with imperfect phase reference. The analytical upper bounds are obtained using the Chernoff bounding technique combined with the modified generating functional approach ...
Osman N Uçan
exaly   +3 more sources

Qpsk-direct-phase regenerator with imperfect reference carrier [PDF]

IEE Proceedings, Part F: Communications, Radar and Signal Processing, 1984
A. Riris
exaly   +3 more sources

Trellis coded quantization/trellis coded continuous phase modulation over Rician channel with imperfect phase reference [PDF]

European Transactions on Telecommunications, 2004
AbstractIn this paper, to improve bandwidth efficiency and error performance, trellis coded quantization/trellis continuous phase modulation (TCQ/TCPM) are combined and a trellis coded quantization/trellis coded continuous phase modulation (TCQ/TCCPM) scheme is introduced.
Ucan, ON
openaire   +2 more sources

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Performance of MPSK trellis-coded modulation in Rayleigh fading with an imperfect phase reference

IEE Proceedings, Part I: Communications, Speech and Vision, 1992
The pairwise error probability for a trellis-coded multiple phase shift keying (MPSK) system with imperfect phase reference at high signal-to-noise ratios is derived. These results are used to study the effect of phase offset, phase jitter and imperfect differential detection on trellis-coded MPSK. >
A Bateman
exaly   +2 more sources

Correction of wave-front retrieval errors caused by the imperfect collimation of reference beam in phase-shifting interferometry

Optik, 2014
Abstract In phase-shifting interferometry (PSI) the standard wave retrieval formulae are usually derived based on the condition of a plane reference beam normal to the recording plane. In practice, however, the reference wave may be a spherical wave of large radius or even have a slight inclination at the same time due to the imperfect collimation ...
L Z Cai, X F Meng
exaly   +2 more sources

Performance of turbo coded signals over partial response fading channels with imperfect phase reference [PDF]

Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems (Cat.No.CH37144), 2002
In this paper, the performance of turbo coded signals are investigated over a new channel model, denoted as 1/spl plusmn/D/sup n//Partial Response Fading Channels (PRFC) with imperfect phase reference. The combined effects of the 1/spl plusmn/D/sup n//PRFC and nonideal coherent receiver on the phase of the received amplitude and of a noisy carrier ...
O.N. Ucan, O. Osman, A. Gumus
openaire   +2 more sources