Srinivas Ramavath

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High PAPR is one of the major drawbacks of OFDM systems. It drives the transmitter's power amplifier into its nonlinear region, thus causing nonlinear distortions. Square rooting technique (SQRT) and μ-law companding technique are the simple techniques to reduce PAPR in OFDM systems. In this paper, we derive analytical CCDF for both the techniques.(More)
Due to the exponential increment of spectrum requirement in multimedia application, leads to spectrum scarcity. Traditionally licensed spectrum is used only by licensees over relatively long time period with the help of FSA (fixed spectrum allocation) which guarantees the licensed authorized party without interference. According to FCC records, utilization(More)
Orthogonal frequency division multiplexing (OFDM) technique is considered as a advance technology in realizing high-speed wireless digital communications. However, high peak-to-average power ratio (PAPR) of transmitted signals is a major drawback for multi-carrier modulation systems such as orthogonal frequency division multiplexing and discrete wavelet(More)
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