The emphasis is laid on the influence of the parameters of the active devices(PIN photodiode, MESFET) on the circuit noise, transmission bandwidth and reception sensitivity of the preamplifier.
On basis of resolving Gnutella network message broadcasting mechanism, the paper points out the necessity and feasibility of Gnutella network losing contact, and then bring forward the means which can compartmentalize Gnutella network messages PRI according to the transmitting bandwidth, the time, and the resources which are consumed by servents dealing with all kinds of messages.
According to the mathematic model in frequency domain of the CPS-SPWM technique, the determining method of the transmitting bandwidth of the CPS-SPWM is derived.
As the original video data is so voluminous for real applications, video coding has been a focus of research and applications for saving transport bandwidth and storage space.
To counter the applied conditions and requirements of computer network in Small and Medium Enterprises, based on client/server structure, this paper puts forward several methods of improving network performance from the way of raising system configuration, controlling network data flow, raising network transport bandwidth.
The CSSM algorithm takes source node as initial core cluster,and extends it to construct entire multicast tree with the lowest tree cost step by step by a shortest path scheme between newly-generated core cluster and surplus group member nodes,which can greatly improve transport bandwidth utilization and efficient transport capacity.
The traditional power line carrier equipment often makes use of digital single channel Weaver modulation to implement single-side-band (SSB) modulation. The audio effectively transmitted frequency band of the power line carrier equipment is 300 Hz~3 840 Hz with 4 kHz nominal bandwidth, that is, the effectively transmitted bandwidth equals 3 540 Hz.
It is proved that the attenuation of an acoustic wave brings about a decrease in the diffraction efficiency and an increase in the transmission bandwidth of the device used.
It is shown that electronic restructuring of not only the central transmission frequency but also the transmission bandwidth of the filter as well as the form of the transmission curve is possible in collinear acousto-optic filters.
We show a significant improvement in both the transmission efficiency (up to 97%) and the transmission bandwidth by performing an optimization based on a sensitivity analysis.