Author_Institution :
Dept. of Electr. & Commun. Eng., Sat Priya Group of Instns., Rohtak, India
Abstract :
Orthogonal Frequency Division Multiplexing or OFDM is a form of multi-carrier modulation technique. High spectral efficiency, robustness to channel fading, immunity to impulse interference, uniform average spectral density, capability of handling very strong echoes and less nonlinear distortion are among the favorite properties of OFDM. Even though there are many advantages of OFDM, it has two main drawbacks, high Peak to Average Power Ratio (PAPR) and frequency offset. Clipping, companding, partial transmit signaling (PTS), selected mapping (SLM), interleaving, coding etc. are various PAPR reduction techniques. In this paper, the simulation results of PAPR without any reduction technique, with clipping technique and with companding technique are evaluated.
Keywords :
OFDM modulation; fading channels; nonlinear distortion; radiofrequency interference; spectral analysis; OFDM system performance evaluation; PAPR reduction techniques; channel fading; clipping technique; companding technique; echoes handling; frequency offset; high spectral efficiency; impulse interference immunity; multicarrier modulation technique; nonlinear distortion; orthogonal frequency division multiplexing; partial transmit signaling; peak to average power ratio; selected mapping; uniform average spectral density; Binary phase shift keying; Equations; Frequency division multiplexing; Peak to average power ratio; 16PSK; BPSK; DSP; IFFT; OFDM; PAPR; QPSK;
