Abstract

The article discusses the issue of signal transmission in channels where fading takes place along with additive white Gaussian noise. It is commonly supposed that at this time the signal amplitude (envelope) was fluctuated with the Rayleigh distribution. It is accepted that fading is slow and frequency is non-selective. For transmit diversity from antennas, their combination with signals is carried out in a selective scheme. The characteristics of systems based on 2FSK-8PSK and 2FSK 8APSK signals are evaluated with the help of computer simulation.

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