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High Peak to Average Power Ratio (PAPR) is one of the major challenges of any Orthogonal Frequency Division Multiplexing (OFDM) system. Many methods have been suggested for reducing PAPR. In this paper we design and implement an OFDM system on a FPGA along with PAPR reduction using Selected Mapping (SLM) technique. We analyse challenges in practical(More)
This paper describes a design and implementation of a baseband Orthogonal Frequency Division Multiplexing (OFDM) transceiver utilizing Multiple Input Multiple Output (MIMO) signal processing for increased data rate. MIMO OFDM has many promising features which allow wireless devices to communicate at a higher data rate with reduced errors and hardware(More)
In this paper we implemented real time speech processing and recognition using Infinite Impulse Response (IIR) digital filters. We used an array of 7 digital bandpass filters to filter out various frequencies and recognize each word by its frequency spectra. The system is implemented on a low cost AVR architecture microcontroller which also explored the use(More)
Four conformationally defined analogs of amphetamine were synthesized and studied for their ability to potentiate the action of levarterenol on the isolated vas deferens from reserpine-treated rats. The compunds also were studied for indirect adrenergic agonist activity in the same test system. A definite stereochemical correlation was demonstrated in each(More)
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