Pradyumna Siddhartha

Learn More
In wireless communication technology, Direct Sequence Code Division Multiple Access (DS-CDMA) system has been used. Multiple Access Interference (MAI) limits the capacity of DS-CDMA. In this paper, Linear Multiuser Detectors and conventional Matched Filter (MF) are simulated using Gold sequence and PN sequence as spreading codes in DS-CDMA system.(More)
— Direct Sequence Code Division Multiple Access (DS-CDMA) system is suffers from Multiple Access Interference (MAI). MultiUser Detection schemes were introduced to detect the users' data in presence of MAI. In this paper, we proposed a novel method is called Hybrid Interference cancellation (HIC) scheme. It consists of the combination of subtracting and(More)
— Direct Sequence Code Division Multiple Access (DS-CDMA) system is well known wireless technology. This system suffers from MAI (Multiple Access Interference) caused by Direct Sequence users. MultiUser Detection schemes were introduced to detect the users' data in presence of MAI. Linear Multiuser Detectors and conventional Matched Filter (MF) are(More)
Passpoints system is one of the techniques used in Authentication using Graphical Images. In this method users click on images rather than typing a long and complex alphanumeric password with the computer keyboard. Psychological studies have shown that people can remember pictures better than text. During the time of registration a user may choose several(More)
Direct torque control based on space vector modulation (SVM-DTC) preserve DTC transient merits, furthermore, produce better quality steady-state performance in a wide speed range. The SVM-DTC system based on input-output linearization technique for induction machine drives is developed in this paper. A sliding-mode observer for estimating flux is(More)
Direct Sequence Code Division Multiple Access (DS-CDMA) system is well known wireless technology. This system suffers from MAI (Multiple Access Interference) caused by Direct Sequence users. MultiUser Detection schemes were introduced to detect the users' data in presence of MAI. Linear Multiuser Detectors and conventional Matched Filter (MF) are simulated(More)
In this paper, partial pre-coding method has been developed to solve the Multiple Access Interference (MAI) and computational complexity problems. This is done by selectively pre-decorrelating users to destructive interference while allowing interference when it is expected to contribute to their signal. The resulting SNR improvement is achieved by making(More)
— Direct Sequence Code Division Multiple Access (DS-CDMA) system is well known wireless technology. This system suffers from MAI (Multiple Access Interference) caused by Direct Sequence users. MultiUser Detection schemes were introduced to detect the users' data in presence of MAI. In Multi stage Partial parallel interference cancellation (MP-PIC) method(More)