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Mitigating the impact of errors on video quality over wireless network has been a major issue of concern which requires highly efficient and effective scheme. The dynamic and heterogeneous nature of the wireless network requires highly sophisticated approach to mitigate the impact of transmission error on video quality. The trade-off between delay and video quality should be considered while designing...
Ultra-wideband (UWB) technology is a promising candidate for realization of wireless personal area networks (WPANs). Although UWB offers very high data rates, data throughput can still be increased if the available bandwidth is utilized in a more efficient manner. In this paper, we suggest a simple mechanism to improve bandwidth utilization, and hence maximize data throughput. Analysis and simulated...
This paper describes four microwave filter configurations that have been recently developed over the past five years. These are a direct coupled cavity waveguide filter, an internally- coupled hairpin-line filter, a meander-gap hairpin line filter and a three-element parallel-coupled filter.
A simple broadband parallel coupled microstrip line (PCML) bandpass filter with compact design is proposed. A PCML structure with two feeding network of various widths is characterized by an equivalent J-inverter network. The extracted parameters indicate that the normalized J susceptance and equivalent electrical length are frequency dependent. A pair of PCML structure with middle resonator, without...
Ultra wideband (UWB) systems can cause potential interference to other narrowband systems sharing the same band, such as WiMax and Wi-Fi. Detect and avoid (DAA) mechanisms were suggested as a cognitive radio-based solution to reduce interference by adaptively reducing the transmitted power at the overlapping bands. Applying this mechanism may result in degrading the performance of UWB transmissions...
There has been an alarming increase in demand for multimedia applications due to explosive growth in communication, commerce and entertainment services. Nowadays devices such PDA, laptops and phone have more processing and computing capability. Consequently, this will eventually allow more effective and efficient video streaming and mobile applications over wireless network. Perhaps the development...
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