Abstract
Despite the variety of modern means of communication, radio relay lines of information are not lost due to the possibility of their creation in hard-to-reach mountain regions and in conditions of dense development of large cities. One-way radio relay lines have been widely used to transmit information between the central office and branches of the enterprise in corporate networks, between base stations and switching center in mobile communication networks, between military structures for operational management, in emergency situations. When creating radio relay links, the basic tasks are to use the minimum possible transmitter power sufficient to ensure the required quality of information transmission. At the same time minimum influence of electromagnetic radiation on health of people in the area of station operation, better electromagnetic compatibility of equipment with equipment of neighboring regions, duration of station operation at power supply from accumulator battery are achieved. In this paper are reviewed the methods to improve the energy, noise immunity and confidential microwave link using the 4-way signal of PM-4. The advantages of microwave links with noise-like signals generated using pseudorandom sequences based on chaos are shown here.
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