On the phase sequence set of SLM OFDM scheme for a crest factor reduction

Authors:
Dae-Woon Lim;Seok-Joong Heo;Jong-Seon No;Habong Chung
Affiliations:
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea;-;-;-
Venue:
IEEE Transactions on Signal Processing
Year:
2006

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Abstract

The crest factor distribution of orthogonal-frequency-division-multiplexing (OFDM) symbol sequences is evaluated, and it is shown that OFDM symbol sequences with a short period are expected to have a high crest factor. The crest factor relationship between two input symbol sequences, Hamming distance D apart, is also derived. Using these two results, two criteria are proposed for a phase sequence set of the selected mapping (SLM) OFDM scheme and suggest the rows of the cyclic Hadamard matrix constructed from an m-sequence as a near-optimal phase sequence set of the SLM OFDM scheme.