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AssigneeAlcatel Lucent
InventorsMichel-Guy Francon, Paul Vincent, Nicolas Chuberre
Estimating the term…
This invention concerns a terrestrial repeater (RF) dedicated to a hybrid communication network comprising a satellite for transmitting to terminals (and at least to the repeater) signals (SPI) in the form of a first modulated carrier with data to be transmitted, encoded by suing initial sequences of at least two pseudo-random codes, and spectrally spread with spreading codes each associated with a sequence. The repeater comprises: i) first processing means (MRP, MTB) for dispreading and demodulating the received signals so as to retrieve the encoded data which they represent for decoding them, and ii) second processing means (MTPi, APi) for re-encoding the retrieved data with one first part of the codes of the corresponding sequence to constitute first encoded data, and with at least a second part of the codes of the corresponding sequence, at least complementary to the first part, to constitute at least second encoded data, and to generate to the terminals, first signals (SP″), in the form of the first modulated carrier with the first encoded data and spectrally spread, at lest second signals (SP2) in the form of at least and second modulated carrier with the second encoded data and spectrally spread.
A terrestrial repeater (RT) for a hybrid communication network, including at least one communication satellite (SAT) adapted to transmit to communication terminals (UE) and at least to said repeater signals in the form of a first carrier modulated with principal data to be transmitted, encoded by means of initial sequences of at least two mutually orthogonal pseudo-random codes each associated with a physical transmission channel, and spread spectrally by means of spreading codes each associated with a sequence, the terrestrial repeater comprising i) first processor means (MRP, MTB) adapted, on reception of said signals, to despread said signals and to demodulate said signals to recover the encoded principal data that said signals represent in order to decode said principal data, and ii) second processor means (MTPi, API) adapted to re-encode said recovered principal data with a first portion of the codes of said corresponding sequence to constitute first encoded principal data and, with at least one second portion of the codes of said corresponding sequence, at least complementary to said first portion, to constitute at least second encoded principal data, and to generate for said terminals (UE), first signals in the form of said first carrier modulated with said spectrally spread first encoded principal data and, at least second signals in the form of at least one second carrier modulated with said spectrally spread second encoded principal data.
Dependencies are inferred from the claim text.