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Updating current swell for each feeder is one of stage of fault localization considering impedance based method. Estimation formula was adopted based on impedance line and load value. This paper investigate the impact of single and paralel impedance load to the accuracy of current swell estimation in the each feeder. Three Phase to ground fault (LLLGF) was simulated using the PSCAD simulation program...
Voice over Internet Protocol is a technology that enables to transport voice over Internet Protocol. The growth of this technology is due to the integration of voice and data traffic over wireless infrastructure. The low cost of voice usage on internet and wide spread of wireless technology has an advantage to implement VoIP system in today IP network. This study investigates the performance of VoIP...
The usage of video streaming over the wireless devices especially the smart mobile phone is growing very rapidly. However to maintain the quality of service is a challenging tasks. The parameters such as Delay, Packet Loss and Jitter play important roles in ensuring the quality of video streaming over WLAN. In this paper, the performance of video streaming over wireless-N was studied in two different...
A Rake receiver is a radio receiver designed to counter the effects of multipath fading in wireless communications. It does this by using several “sub-receivers” each delayed slightly in order to tune in to the individual multipath components. Rake receiver preceding a maximal ratio combining becomes an optimum receiver in the sense of highest signal-to-noise ratio. A Rake receiver is part of the...
Wireless local area network has become the most popular networks in connecting to internet especially at home, universities, hotels and workplaces. Therefore understanding the radio frequency behaviour of WLAN is vital in ensuring the best possible coverage. Wireless-N system operators in two frequencies band which are the 2.4GHz ISM band and 5GHz UNII band. However this paper investigates the radio...
Wireless access network has becoming vital tools in maintaining communications especially at home and workplaces. Due to cost effective, easy to install and maintaining wireless access network or wireless local area network has becoming the most favourable as compare to wired local area network. The needs of high speed wireless access network are a major requirement to ensuring the system work very...
Wireless local area network has become the most popular tools in maintaining internet communications especially at home, universities, hotels and workplaces. This is due to cost effective, fast deployment, provide high data security, reliability, easy to install and maintaining as compared to wired local area network. The Wireless local area network operates in two frequency bands. The IEEE802.11b/g...
From the subscribes perspective, echo is arguably the worst type of impairment that can be encountered during a telephone conversation. The echo canceller's goal is to detect and remove echo as quickly and effectively, thereby minimizing any loss in voice quality. The echo canceller must perform this function under all conditions including double-talk (when both parties are speaking at the same time)...
The purpose of this study is to analyze the WIFI signal propagation, using IEEE 802.11g radio interface. In most cases, the WIFI radio interface is installed by the people who are not familiar with the system, especially when dealing with signal propagation at high frequency. Hence, there is a need to understand this signal behavior particularly in indoor scenarios. This study focuses indoor signal...
Providing 100% reliable radio coverage within their service area are very challenging task to mobile operators. Especially, in an area that experiences abnormal attenuation to radio frequency (RF) such as valley or man-made structure such as tunnel, subway station, or underground parking on the whole upset this goal. These areas need to be removed by enhancing the weak RF signal in these zones. Building...
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