The article discusses the possibility of using cascade multiple access Orthogonal Code Division Multiplexing - Orthogonal Chirp Division Multiplexing to ensure better noise immunity of information in channels with a high level of absorption, scattering, fading, etc., such as the wireless underwater channel. The aim of the research also is estimating the comparative computational complexity of the signal propagation of both types of compared communication and information transmission systems based on cascade multiple access. The experiment includes researching of the number of channels with various rate of negative effects, specifically underwater optical and acoustic channels. All of the data obtained during the experiment belongs to them. Besides, the results of research demonstrate dependence of bit error rate on the signal-to-noise ratio