A simple encodable/decodable OFDM QPSK code with low peak-to-mean envelope power ratio

摘要

We present a QPSK coding scheme for use in multicarrier communications. The scheme supports simple encoding and extremely simple maximum likelihood (ML) decoding algorithms for orthogonal frequency division multiplexing (OFDM) applications. Moreover, all the codewords have a peak-to-mean envelope power ratio (PMEPR) of at most 4.