Results 221 to 230 of about 433,330 (264)
Some of the next articles are maybe not open access.
A bandwidth efficient OFDM transmission scheme
IEEE International Conference on Acoustics Speech and Signal Processing, 2002In this paper, a new bandwidth efficient OFDM transmission scheme is proposed. A bandwidth efficient iterative scheme for OFDM systems without using cyclic prefix was proposed before [3] which works well when a channel does not have a deep spectral null. But such a frequency domain deep null is common in a wireless channel. A bandwidth efficient scheme
Jaekwon Kim +2 more
openaire +1 more source
Electric and Hybrid Vehicle Technology International, 2019
A 4-speed transmission features traction motor-synchronized shifts and a deep-ratio first gear for difficult launches, and can offer improvements to a range of performance markers
openaire +1 more source
A 4-speed transmission features traction motor-synchronized shifts and a deep-ratio first gear for difficult launches, and can offer improvements to a range of performance markers
openaire +1 more source
Efficient transmission of halftones via facsimile
Journal of Electronic Imaging, 1996The conventional method for sending halftone images via facsimile machines is inefficient. The previously proposed Tone- Fac algorithm improves the transmission of halftone images. Tone- Fac represents a halftone image by mean gray values of the disjoint blocks and an error image, which records the difference between the desired halftone and the ...
Hei Tao Fung, Kevin J. Parker
openaire +1 more source
A High Spectrum Efficiency Transmission Scheme
2009 International Conference on Scalable Computing and Communications; Eighth International Conference on Embedded Computing, 2009In order to improve the transmission performance in inter-symbol interference channel, a controlled inter-symbol overlapping transmission scheme to obtain high frequency efficiency, which is called inter-symbol overlapping transmission (ISOT), is studied. ISOT allows $K$ symbols to be simultaneously transmitted without increasing channel bandwidth, and
Menghui Yang +4 more
openaire +1 more source
Efficient fax transmission of halftone images
Journal of Electronic Imaging, 1992The efficient encoding and transmission of information for facsimile communication relies on redundancy in the scanned pixels. Halftone images, especiaily those rendered by high-quality dispersed dot techniques, are "busy" with alternative black and white pixels and shorter run lengths as compared to text information.
Kevin J. Parker, Allan C. Cheung
openaire +1 more source
Efficient storage and transmission of ladar imagery
Applied Optics, 2003We develop novel methods for compressing volumetric imagery that has been generated by single-platform (mobile) range sensors. We exploit the correlation structure inherent in multiple views in order to improve compression efficiency. We show that, for lossless compression, three-dimensional volumes compress more efficiently than two-dimensional (2D ...
Joseph C, Dagher +2 more
openaire +2 more sources
Energy-efficient transmission with data sharing
2015 IEEE Conference on Computer Communications (INFOCOM), 2015In a wireless system, when multiple applications can share data transmitted by rate-adaptive wireless devices, there exists a trade-off between transmission redundancy and energy efficiency. This paper conducts the first theoretical analysis on such a trade-off.
Weiwei Wu 0001 +4 more
openaire +1 more source
Ordered Transmission for Efficient Wireless Autonomy
2018 52nd Asilomar Conference on Signals, Systems, and Computers, 2018Collaborative autonomous systems may rely on wireless communications in dynamic settings. Fundamental to these systems is collaborative decision making, gathering evidence and efficiently producing a joint decision. In many applications fast decision cycles are required and the speed of decision limits the overall system performance.
Yicheng Chen 0001 +2 more
openaire +1 more source
Transmission efficiency in photon counting channels
IEEE Transactions on Communications, 1989An investigation is presented of the maximum transmission efficiency that can be reached over an ideal photon counting channel, having fixed the bandwidth expansion factor. First, the ideal situation, represented by C.E. Shannon's (1959) theorem for discrete channels, is analyzed.
openaire +1 more source