| 摘要 |
FIELD: radio engineering; data transfer by noise-like signals in communication systems with wide dynamic range of signals received. ^ SUBSTANCE: system transmitter has carrier and clock frequency generator, pseudorandom sequence generator, orthogonal pseudorandom sequence shaper, two multipliers, phase keyer, 90° phase shifter, phasing unit, clock frequency control, switch, and controlled transmission filter. System receiver has two multipliers, two band filters, phase detector, orthogonal pseudorandom sequence shaper, phasing unit, and synchronizing unit, as well as noise-like signal separation unit, low clock-frequency synchronizing unit, and decision unit. Newly introduced in system is return channel similar to forward one that incorporates receiver and transmitter at input. Data is transferred by means of noise-like signal occupying band N times narrower than sync signal band; at the same time signal frequency division is attained for all subscribers with signal value being maintained due to reducing clock frequency by N times and enhancing accumulation time by N times. ^ EFFECT: enlarged permissible dynamic range of signals received. ^ 1 cl, 2 dwg |
