Emission / reception of satellite broadcast hyperfrequency signals with interactive return path using a spread spectrum protocol

摘要

Installation of emission / reception (1) of radio frequency signals comprising: - an emission / reception unit (2) comprising means (4) capable of receiving electrical signals resulting from the transformation of radio signals received by terrestrial hertzian route or via satellite, called electrical signals on the outbound route; - at least one box (11) that includes a modulator (14); - a coaxial cable (10) that connects the emission / reception unit and the box suitable for transporting said electrical signals in the outbound path of said transmission / reception unit (2) to said box (11), being characterized the emission / reception installation because: - the emission / reception unit (2) comprises: - a demodulator (21) capable of demodulating electrical signals according to a first modulation / demodulation protocol; - a modulator (5) of electrical signals according to a second modulation / demodulation protocol different from said first protocol, said second protocol being a spread spectrum protocol, said modulator modulating (5) the signals demodulated by said demodulator (21 ); - means (23) for transforming said modulated electrical signals according to the aforementioned spread spectrum protocol, called electrical signals in return path, into radioelectric signals suitable for being emitted by satellite - the modulator (14) of the box (11) It is suitable for modulating electrical signals according to said first modulation / demodulation protocol, said electrical signals being destined to be demodulated by the demodulator (21) according to said first protocol and then modulated by the modulator (5) according to said second protocol modulation / demodulation; - the coaxial cable is suitable for transporting the electrical signals from said modulator (14) according to said first protocol of said box (11) to an emission / reception unit (2).