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In this paper, we further evaluate our previously-proposed NewRAPID by comparing with TCP CUBIC and TCP RAPID in the following aspects: intra-protocol fairness, inter-protocol fairness, and convergence time. The result shows that TCP CUBIC provides more intra-protocol fairness than others because of its stability characteristic while TCP RAPID and TCP NewRAPID provide almost the same. Our designed...
This paper presents an alternative method to generate the digital frequency modulation (FM) signal. By summing an information signal m(k) with the oscillating frequency ω0 and putting the result into the cosine function of digital oscillator coefficient which is −2 cos (ω0 +m(k)), the FM signal is obtained. Computer simulations are conducted to show the validity of the proposed FM signal generator
In this paper, we present a compact thin-film ultrawideband (UWB) antenna with round corner rectangular slot and partial circular patch. A CPW-fed rectangular slot with a fork-like tuning stub radiates through a rectangular aperture, which ensures UWB impedance matching from 2 GHz to 11.6 GHz for S11 < −10 dB. This antenna is printed on Mylar® Polyester Film substrate with size of 60×53.3...
This paper presents a compact ultrawideband monopole antenna with 5.5 GHz notched band. By inserting V-shaped slit into the patch of UWB antenna, the notched band is obtained. The V-shaped slit length corresponds to a half guide wavelength of center frequency of band notch. The proposed antenna can rejects the frequencies from 5.3 GHz – 5.65 GHz, resulting in avoidance of electromagnetic interference...
This paper presents a 1×4 asymmetric Y-shaped slit loaded microstrip array antenna. The antenna consists of a rectangular patch with four asymmetric Y-shaped slits at the patch corners and a double thickness of FR4 substrate. This antenna will be most utilized in WLAN applications. A modified array antenna configuration is proposed radiation pattern and gain characteristics to enhancement. The radiation...
Multimode fiber is one of two major types of optical fibers used in practice. Its capacity in terms of the available bandwidth for signal transmission can be increased significantly if the signal is transmitted over the passbands at high frequency range. However, it has been shown that as the frequency increases, the magnitude response of multimode fibers is reduced and becomes relatively flat at...
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