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A lytic bacteriophage RG-2014 infecting a biofilm forming multidrug resistant bacterium Delftia tsuruhatensis strain ARB-1 as its host was isolated from a full-scale municipal wastewater treatment plant. Lytic phage RG-2014 was isolated for developing phage based therapeutic approaches against Delftia tsuruhatensis strain ARB-1. The strain ARB-1 belongs to the Comamonadaceae family of the Betaproteobacteria...
In cognitive radio network (CRN) three types of spectrum sensing techniques are widely used: matched filter detection, cyclostationary detection, and energy detection. Matched filter detection technique provides maximum SNR at receiving end but the detector need to be matched with the input signal i.e. impulse response of the system need to be made as the delayed version of mirror image of input signal...
The relation between offered traffic and the length of frame taking the batch size as a parameter are nonlinearly related under Batch Markovian Arrival Process (BMAP). Therefore the prediction of carried traffic and blocking probability against the length of frames or the batched size becomes more complicated compared to conventional packet or circuit switched traffic. The previous literature deals...
The prime objective of LTE (Long-term evolution) mobile cellular network is to ensure high speed data with good QoS. In LTE femtocellular network the tiny femtocell are integrated with macrocell to transfer overflow traffic (off loading) from macrocell to femtocell. A dense femtocellular network experiences frequent handover and huge interferences. Therefore in traffic modelling two parameters: the...
The main objective of source coding is to represent the symbols or messages generated from an information source in a suitable form so that the size of the data is reduced. In image compression we use JPEG where huge number of zero is generated in medium and high frequency region of transformed image using the combination of DCT (Discrete Cosine Transform) and quantization. This is done to take the...
In modern wireless communication, multiple-input multiple-output (MIMO) system plays an important role as it improves channel capacity, range and reliability without requiring any additional bandwidth or transmit power. This research presents a detailed analysis of capacity performance of MIMO systems under four fading cases i.e. Gaussian, Weibull, Rayleigh and Nakagami-m fading in the low signal-to-noise...
In recent days intense research is taking place on energy efficiency (EE) of a multi-user wireless network. In this paper we propose a model to detect EE based on limited user traffic model. We observe the variation of EE against the number of users and energy signal to noise ratio engaged by the user. The impact of enhancement of subcarriers on EE and channel capacity is also analyzed to reach an...
This paper presents financial feasibility analysis of a micro-controller based solar powered tricycle or rickshaw for Bangladesh. The main components of the Rickshaw are: rickshaw structure, a photovoltaic array, a battery bank, a battery charge controller, PIC micro-controllers and a DC motor. Here PIC micro-controllers are used to control the duty cycle and speed of the DC motor. The financial feasibility...
In Orthogonal Frequency Division Multiplexing (OFDM) carriers among users are orthogonally related. Hence no guard band is necessary like Frequency Division Multiplexing even spectrums of users can overlap, enhances the spectrum efficiency of the network. In this paper different window functions in frequency domain are considered in pulse shaping of OFDM data symbols which are considered uncorrelated...
In this paper, we derived analytical expression of traffic parameters of M/G/1/K queuing system to observe performance of a router with finite buffer length in context of cost analysis. Four different types of service time distributions (Exponential, K-Erlangian, Hyper Exponential and Long tailed distribution) are considered to evaluate mean queue length and probability of overflow of buffer with...
Some antennas like bowtie, spiral, log-periodic array and conical spiral are known as frequency independent in context of antenna parameters like input impedance, reflection coefficient, gain and radiation pattern. In this paper, the work is done on bowtie and spiral antenna due to their easy construction and implementation. Although both the antennas are considered as frequency independent but shows...
Question matching is a key stone in web intelligent question answering system. A novel question matching algorithm based on ontology and description logic is presented in the paper. Domain knowledge represented by ontology is very important in question matching. Concepts and relations between concepts are extracted from both standard and user questions, then the concepts and relations in standard...
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