Parmender Singh

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Over the last few years, research scientists have proved that lithium-ion (Li-ion) battery can successfully compete as a rechargeable battery for green energy vehicles (electric vehicles or EVs, hybrid electric vehicles or HEVs) because of its higher energy density and lighter weight. However, capacity fade and battery pack failures remain a hindrance to(More)
In an OFDM system, typical sub-carrier modulation schemes include Binary Phase Shift Keying(BPSK) Quadrate Phase Shift Keying (QPSK), and Quadrature Amplitude Modulation (QAM). High level of modulation is used in order to increase the data rate of the OFDM system. In this paper the analysis of high level of modulations techniques such as BPSK, QPSK, 8PSK,(More)
In this paper, we analyze the performance of multicarrier spread spectrum systems in a multipath Rayleigh fading channel using frequency domain equalizer. Pilot-based channel estimation is done to compensate for the amplitude and phase distortions of the signal in the channel. BER performance is found for both AWGN and fading channels. It is found that the(More)
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