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Since 1990's Combinatorial explosion is a crucial topic in software testing domain. In this domain the exhaustive input interaction test is not practical solution to test all software configurations for generating test cases. T-way test strategy provides a solution to overcome the problem. To date, most of the research on designing methods focus on combinations of input parameter values, where the...
Today software development is a big challenge due to market policy, cost, quality and most importantly customer satisfaction. But the conventional system development is not enough to fulfill those requirements. It needs a new method of solution to overcome those challenges. Component Based Software Engineering (CBSE) can be a solution, in where Component Based Software development (CBSD) is a process...
This paper presents a comparative study between Active Disturbance Rejection Control (ADRC) based Load Frequency Control (LFC) and proportional-integral-derivative (PID) based LFC. Both, single-area power system and multi-area power system have been considered where area control error (ACE) has been regulated in the presence of uncertainties in system dynamics and external disturbances. The ADRC proves...
Active disturbance rejection control (ADRC) has gained significant attraction due to its simple tuning method and robustness against process parameter variations, whether the plant is linear or non-linear, time-varying or time-invariant. In load frequency control, the use of ADRC is proposed to regulate the area control error, frequency error and tie-line error in the presence of internal dynamics...
Orthogonal frequency division multiplexing (OFDM) is a promising modulation technique for transmitting large amounts of digital data through radio waves. One major drawback in OFDM communication is peak-to-average power ratio (PAPR). Mainly because of the nonlinearity of the high power amplifier, these results in high out-of-band radiation, inter-carrier interference, and bit error rate performance...
MVDR algorithm which is based on adaptive uniform linear array produces optimal weight to each element in the array and gets perfect signal direction of arrival (DOA). Any mismatch in the signal DOA estimation mitigates the behavior of MVDR. Mismatch in MVDR is affected by the reference element location assumption in the elements' array. In this paper a new method is proposed to modify the standard...
Smart antenna is a system based on the antenna elements which are distributed uniformly as array and on the beamformig (BF) algorithm. Each element in the array receives the wave plane signals individually, and then, the beamformer tries to produce the optimum weight for each element with respect to the reference element in the array. This technique is called beamformig. MVDR is one of the most important...
Peak-to-Average Power Ratio (PAPR) reduction is an attractive research topic among the OFDM transmission research communities. Partial Transmit Sequence (PTS) has been a promising candidate out of the proposed PAPR reduction techniques without any distortion. In any PTS system, partitioning of the OFDM frame into disjoint sub-blocks is a crucial step. Adjacent partitioning (AP) is a rather simple...
Exhaustive testing for event driven sequence input interaction is costly and not always practicable for all types of software testing. So, an alternative technique is crucial where optimum/near optimum test case generation is key concern. This paper presents a feasible test suite generation technique using Simulated Annealing (SA) algorithm for Event Driven Input Sequence Testing (EDIST)and called...
In this paper, a new approach is considered, which are different categories to reduce the bits error rate and PAPR reduction, utilizing single carrier frequency division multiple access SC-FDMA and orthogonal frequency division multiple access OFDMA. This paper discusses the appropriateness of using OFDMA or SC-FDMA in the uplink for high-data-rate, considering a target performance metrics the PAPR...
For better understanding the operation of organic electronic devices, the information of carrier behavior is indispensable. In this study, we propose a new usage of time-off-light (TOF) technique to examine the carrier behavior in operating device. From the measurement for ITO|α-NPD|Alq3|Al device, which is a widely investigated organic light emitting diode, we have demonstrated the feasibility of...
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