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Congestion growth problem is a daily life experience all over the world, especially in large cities. The motion of Emergency Vehicles (EVs) like Ambulances, police, and firefighting vehicles are highly affected by traffic Congestion, by which rescue time may cost a life. The Priority Level Mutualism for Emergency Vehicle (PLMEV) algorithm aims to reduce the waiting time by giving higher priority for...
The considerable amount of underutilized spectrum in the unlicensed band has motivated 3GPP to study the introduction of LTE in the ISM band to fulfill its increasing demand for extra bandwidth. This will make LTE and Wi-Fi the main opponents in the ISM band. This paper presents the system performance analysis of MAC for LTE and a comparative study to Wi-Fi. Extensive MAC systems simulations are performed...
The Automatic Speech Recognition (ASR) systems suffer from many types of noises in different environments. Nowadays, developing robust ASR system is an attractive research topic due to the high demands in many commercial applications. In this paper, the Mel-Frequency Cepstral Coefficients (MFCC) is modified to robust the noise, where the spectrogram is used as time-frequency analysis tool. The proposed...
The Global Navigation Satellite Systems (GNSS) suffer from accuracy deterioration and outages in dense urban canyons and are almost unavailable for indoor environments. Nowadays, developing indoor positioning systems has become an attractive research topic due to the increasing demands on ubiquitous positioning. WiFi technology has been studied for many years to provide indoor positioning services...
In Brain Computer Interface (BCI), the thoughts of a subject is read to provide an appropriate way of communication using only brain signals. The Information of electroencephalogram (EEG) signals defer between subjects depending on their thoughts according to research. In this paper, a comparison between different types of features tested by several classifiers is done to propose a model for classifying...
The voltage regulator is the intelligence of the system and controls the output of the exciter so that the generated voltage and reactive power change in the desired way. In most modern systems the automatic voltage regulator (AVR) is a controller that senses the generator output voltage (and sometimes the current) then initiates corrective action by changing the exciter control in the desired direction...
Hospital care facilities often make use of non-interoperable devices produced by many different vendors to monitor the state of patients. The heterogeneity of these devices makes it difficult to synthesize multivariate monitoring data into a unified array of real-time information regarding the state of patients in a care unit. Without an infrastructure for data integration, the assignment of caregivers...
Low density parity check (LDPC) codes are one of the best error correcting codes known to approach the Shannon limit. This paper examines the impact of different rates and code lengths of Log Belief Propagation LDPC algorithm on the performance of digital video broadcasting-satellite-second generation (DVB-S2) on both Additive white Gaussian Noise (AWGN) channel and Rayleigh fading channel, it also...
Due to the increasing demand on wireless technologies, many researches are trying to find a way to support a continually growing number of users and services which consume bandwidth. Multi-carrier with code division multiple access (MC-CDMA) is a promising candidate for mobile radio systems. On the other hand, Space Time Block Code (STBC) as a spatial diversity multi input multi output technique (MIMO)...
The exponential growth of wireless technologies attracted many research to improve the quality of service (QoS) of global wireless networks such as 802.11 and 802.16. In specific, research targeted the physical layer (PHY) parameters and medium access control (MAC) mechanisms to improve QoS. In this paper we provide a simple yet efficient model to maintain the quality of service for wireless networks...
In this paper, we present an efficient system for transmitting uncompressed image (HD) over wireless noisy channel. With the advances in RF technology and the huge bandwidth available worldwide in the 57-66 GHz millimeter-wave unlicensed spectrum, WPANs that can support multigigabit transmission are being developed. However, retransmissions due to error in packets may be unsuitable for uncompressed...
Due to the increasing demand on wireless technologies, many researches targeted the improvement of quality of service (QoS) of global wireless networks such as 802.11 and 802.16. Most researches targeted the physical layer (PHY) parameters and medium access control (MAC) mechanisms to improve QoS, but they didn't guarantee the QoS of each type of application. To overcome this deficiency we provide...
Session Initiation Protocol (SIP) provides advanced signaling and control functionality for a wide variety of multimedia services (audio and video). This paper investigates the effect of end-to-end delay, packet loss and jitter on SIP-based VOIP calls. The investigation is carried out on various media types (10 base-T, 100 base-TX, WLAN) with various SIP registrar (inbound and outbound). To satisfy...
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