Amandeep Singh Sappal

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— COordinate Rotation DIgital Computer (CORDIC) algorithm has potential for efficient and low-cost implementation of a large class of applications which include the generation of trigonometric, logarithmic and transcendental elementary functions, complex number multiplication, matrix inversion, solution of linear systems and general scientific computation.(More)
– Orthogonal frequency division multiplexing system is multichannel system that provides high rate and high quality wireless communication services, but system performance is degraded by two factors, one is the symbol timing offset (STO) and other is the carrier frequency offset (CFO) caused by Doppler frequency shift. Several approaches have been proposed(More)
Orthogonal Frequency Division Multiplexing (OFDM) is a well known technique for the broadband wireless communication system. However, a main problem in OFDM is its vulnerability to frequency offset errors due to which the orthogonality is destroyed that result in Inter carrier Interference (ICI). ICI causes power leakage among subcarriers thus degrading the(More)
To overcome a multipath fading environment with low complexity and to achieve wireless broadband multimedia communication systems, orthogonal frequency division multiplexing (OFDM) transmission scheme is used. OFDM is one of the applications of a parallel data transmission scheme, which reduces the influence of multipath fading. The performance of OFDM can(More)
Orthogonal frequency division multiplexing scheme being spectrally efficient is used in modern communication systems. To achieve error free communication guard interval is inserted using cyclic prefix and zero padding. The Bit Error Rate (BER) performance for orthogonal frequency division multiplexing (OFDM) system with 16-QAM and varying length of guard(More)
Accurate Power Amplifier modelling is of major concern for wireless communication system designers. Volterra series is most suitable to represent the actual behavior of non-linear power amplifier with memory. But as the order of memory polynomial increases, the number of Volterra terms also increases, resulting in the implementation complexity of Volterra(More)
Power amplifier is used at the front end of any communication system. But this device suffers from thermal effects. Thermal effects cause in-band and out-band distortion. Thus compensation of thermal effects is of major concern. In this paper the variation of in-band and out-band with thermal effects has been studied in terms of lower channel and upper(More)
Due to their small size, microstrip patch antennas are widely used in the design of portable wireless communication equipments. Designing a patch antenna with reduced size, for a given band is major area of research these days. Optimization algorithms are widely explored by researchers for calculating the parameters of a patch antenna for a given resonance(More)