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To combat channel impairments during transmission of high fidelity audio streams over noisy ATM networks in addition to providing security and high compression to the audio data have been challenging tasks for the researchers in the field. This paper proposes a multi functionality model employed at the transmitting end that provides the advantages of multi level compression, error recovery mechanism...
In this paper we propose a novel architecture with an adaptive approach to the existing partly parallel joint code and decoder design methodology for low density parity check (LDPC) codes. The low power and high throughput are achieved by an 'adaptive iteration controller', regulating the number of iterations required for error correction. We propose an architecture for a 2304 bit, rate-frac12, (3,6)...
Digital watermarking (DWM) technology has been proposed for the implementation of digital right management (DRM) system that can be used for establishing ownership right, ensuring authorized access and content authentication. The goal of this paper is to protect copyrights and content authentication of digital still images with the consideration of high level of robustness against changes made to...
The goal of steganography is to avoid drawing suspicion to the transmission of a hidden message in multi-medium. This creates a potential problem when this technology is misused for planning criminal activities. Differentiating anomalous audio document (stego audio) from pure audio document (cover audio) is difficult and tedious. Steganalytic techniques strive to detect whether an audio contains a...
RoboSoccer simulation is a complex multi-agent system in which agents play the role of soccer players and the main goal is to have a perfect domain for research and investigation on artificial intelligence. This paper intends to propose a new scoring module to select the best point on the goal line to shoot, considering player's position, catching and shooting time difference, and distance to target...
In human communication we see, smell, and touch things to understand the fact of them. We suggest a new way to touch things through the Internet and in a virtual world. We experience a new method of transferring sensation data through the Internet which can be applied widely in human communication. Tactation is the sensation perceived by the sense of touch. Tactation is based on the skin receptors...
During speech production, the significant excitation of the vocal tract occurs at places like instants of glottal closure and the onset of events like bursts. Hence the energy in the excitation signal is high around these places and these instants play an important role in the perception of speech. This property is exploited in this work to derive the weight function. The linear prediction (LP) residual...
This paper presents a method for estimating bias in radar measurements used in tracking aerospace targets. The bias-free and less noisy radar measurement is critical as it would provide correct information of target kinematics which is a necessity of the guidance law to generate the tracking commands. In a typical interception scenario, multiple radars are employed to detect and track target kinematics...
In this paper we have proposed design modifications in fiber optic loop buffer switch. This paper discusses an automatic gain controlling (AGC) scheme for the loop buffer. We have shown that by changing the position of EDFA automatic gain controlling scheme will not be required. We have utilized the availability of filter in tunable wavelength converter (TWC) to reduce number of components in the...
This paper considers the problem of test-bus power reduction in system-on-chip testing. It has been seen that while the cores are fitted with P1500 wrapper, transitions occurring in the bypass registers can be comparable to those in the scan chain. Unlike bus encoding the proposed solution using test vector reordering does not use any extra hardware. It neither affects the compression ratio nor test...
In this paper we propose a new technique for optimizing training data in adaptive network based fuzzy inference system (ANFIS) model. Here the number of data pairs employed for training is minimized by applying a technique called V-fold. Our proposed method is experimentally validated by applying it to two separate sets of data obtained from the benchmark Box and Jenkins gas furnace data set and the...
This paper presents a method for the path tracking problem of a mobile robot using a PI controller. The proposed method inserts an ideal relay in parallel to a conventional PI controller to identify an equivalent FOPDT model for the kinematics of the mobile robot. The parallel connection of the ideal relay to the PI controller helps in designing a robust PI controller in presence of static load disturbances...
In this paper, we have developed a probabilistic approach using PLSA for the discovery and analysis of contextual keyword relevance based on the distribution of keywords across a training text corpus. We have shown experimentally, the flexibility of this approach in classifying keywords into different domains based on their context. We have developed a prototype system that allows us to project keyword...
In this paper, we present the characterization of the discrete-time fractional Brownian motion (dfBm). Since, these processes are non-stationary; the auto-covariance matrix is a function of time. It is observed that the eigenvalues of the auto-covariance matrix of a dfBm are dependent on the Hurst exponent characterizing this process. Only one eigenvalue of this auto-covariance matrix depends on time...
Multi wavelet multiplexing is a signal transmission technique in which the message symbols are coded onto the multiplicity `R' wavelet basis functions for transmission. The proposed transmission scheme comes under the class of orthogonally multiplexed communication. The use of multiplicity `R' wavelet basis functions enhances the data transmission rate. On the other hand, the property of orthogonality...
Quality measurement at the software architecture level leads to risk mitigation, cost reduction and quality assurance. Existing software architectural measurement techniques are qualitative in nature. However, quantification of quality measures facilitates the process of effective quality assurance. In this paper we propose a new quantitative measurement technique based on COSMIC full function points...
Software engineering metrics are units of measurement that are used to characterize the software engineering products and processes. Enterprise resource planning (ERP) is a generic term for integrated systems. ERP projects are a subclass of software projects often accompanied by large-scale organizational changes. One of the major reasons found in the literature for the failure of ERP projects is...
An analytical approach is presented to determine the impact of signal phase distortion due to polarization mode dispersion (PMD) in a single mode fiber (SMF) on the bit error rate (BER) performance of an optical continuous phase FSK (CPFSK) transmission system with MZI based direct detection receiver. The probability density function (pdf) of the random phase fluctuation due to PMD and group velocity...
The concept of performability takes into accounts both availability and performance of a system. The issue of performability is very important for cellular networks due to its inherent characteristics like scarce of radio resources, high failure & outage rate and above all anytime, anywhere service expectation of the subscribers. In this work, first an algorithm is proposed for providing coverage...
Several techniques for optical buffering have been given in past and still a lot of research is being done. Also, the rapid growth of the broadband communication has placed extreme demands upon the telecommunication infrastructure. This has generated an urgent requirement to introduce new technologies. Wavelength division multiplexing (WDM) is one of those techniques, which allows simultaneous propagation...
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