Comparative Study Of Suboptimal Algorithms For Tone Injection
Orthogonal Frequency Division Multiplexing(OFDM) is a very powerful system but having a drawback of
peak to average power ratio (PAPR), which leads to a significant reduction in performance and power efficiency. Tone
injection (TI) is a distortion less technique that can reduce PAPR efficiently without incurring data rate loss or extra
side information. However, TI requires an search over all combinations of possible constellation. Tone injection when
applied alone results in computational complexity. This paper discusses the three suboptimal algorithms namely cross
entropy, tabu algorithm and aggressive clipping that help in reducing computational complexity and compares them.