Cryptography and Communications | 2019
Two constructions for 16-QAM complementary sequence sets with non-power-of-two length
Abstract
Complementary sequences with quadrature amplitude modulation (QAM) symbols have important applications in OFDM communication systems. The objective of this paper is to present two constructions of 16-QAM complementary sequence sets of size 4. The first construction generates four complementary sequences of length L =\u20092 m −\u20091 +\u20092 v , where m and v are two positive integers with 1 ≤ v ≤ m −\u20091. The second one leads to four complementary sequences of length L =\u20092 m −\u20091 +\u20091. It turns out that the peak-to-mean envelope power ratios (PMEPRs) of constructed complementary sequence sets are upper bounded by 4.