The paper is devoted to the development of regular synthesis method of sequences of length  with an optimal Peak-to-average power ratio (PAPR) of Walsh-Hadamard spectrum on the basis of spectral rectangles. The range distribution of the PAPR of Walsh-Hadamard spectrum for full code of the length  is determined. The synthesized sequences can be applied in MC-CDMA technology.

peak-to-average power ratio, multi-code code division multiple access, Walsh-Hadamard transform.