Regular Section
The Constructions of Mismatched Filtering of Periodic Quadriphase Sequences with Even Length
2016 年 E99.A 巻 9 号 p. 1735-1739
詳細
2016 年 E99.A 巻 9 号 p. 1735-1739
Quadriphase sequences with good correlation properties are required in higher order digital modulation schemes, e.g., for timing measurements, channel estimation or synchronization. In this letter, based on interleaving technique and pairs of mismatched binary sequences with perfect cross-correlation function (PCCF), two new methods for constructing quadriphase sequences with mismatched filtering which exist for even length N ≡ 2(mod4) are presented. The resultant perfect mismatched quadriphase sequences have high energy efficiencies. Compared with the existing methods, the new methods have flexible parameters and can give cyclically distinct perfect mismatched quadriphase sequences.
