  This letter presents an improved peak cancellation (PC) scheme for
peak-to-average power ratio (PAPR) reduction in orthogonal frequency division
multiplexing (OFDM) systems. The main idea is based on a serial peak
cancellation (SPC) mode for alleviating the peak regrowth of the conventional
schemes. Based on the SPC mode, two particular algorithms are developed with
different tradeoff between PAPR and computational complexity. Simulation shows
that the proposed scheme has a better tradeoff among PAPR, complexity and
signal distortion than the conventional schemes.
