PAPR Reduction in OFDM Using Partial Transmit Sequence (PTS)
In recent years, OFDM has gained a lot of interest in diverse-digital communication applications. This has been due to its favorable properties like high spectral efficiency and robustness to channel fading. Some of the major drawbacks in OFDM are its high Peak-to-Average-Power Ratio (PAPR) of the transmitted signals and the synchronization of signals. OFDM consist of large number of independent subcarriers, as a result of which the amplitude of such a signal can have high peak values. Coding, phase rotation and clipping are among many PAPR reduction schemes that have been proposed to overcome this problem. Significant reduction in PAPR has been achieved using Partial Transmit Sequence (PTS) which comes under Signal scrambling techniques.