FIELD: information technologies.
SUBSTANCE: device to receive and send OFDM-signals with high noise immunity comprises a noiseless coder - interleaver, a symbol mapper, a unit of pilot channels formation, a unit of pseudorandom phase modulation of subcarriers, a unit to calculate reverse Fourier transformation, a unit to insert a protective interval, a unit of digital-to-analogue transformation, I/Q-modulator-frequency converter, a transmitting antenna, a receiving antenna, a unit to calculate noise-signal ratio, I/Q-demodulator-frequency converter, a unit of analogue-to-digital conversion, a unit to calculate direct Fourier transformation, a phase demodulator of subcarriers, a unit to assess and adjust channel parameters, a symbol demapper, a noiseless decoder-deinterleaver.
EFFECT: improved noise immunity.
3 dwg
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