A New Construction of 16-QAM Codewords with Low Peak Power

We present a novel construction of 16-QAM codewords of length n = 2 . The number of constructed codewords is 162×[4k−1×k−k+1] . When these constructed codewords are utilized as a code in OFDM systems, their peak-to-mean envelope power ratios (PMEPR) are bounded above by 3.6 . The principle of our scheme is illustrated with a four subcarrier example.

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