Frequency sharing in a communication system

Details Frequency sharing in a communication system Frequency sharing in a communication system

H - Electricity

04

B

H04B 7/185 (2006.01)

Patent

CA 2711496

The invention provides a communication system and method of communication. The communication system includes a satellite transmitter arranged to transmit a first signal to be received within a predefined geographical area by a satellite receiver, and a terrestrial transmitter arranged to transmit a second signal to be received within the predefined geographical area by a terrestrial receiver. The first and second signals share a common radio frequency band and the system is arranged such that the first signal is received at an antenna associated with the satellite receiver at a first angle from the horizontal, the first angle being greater than a second angle from the horizontal at which the second signal is received at the antenna. This enables the satellite receiver to distinguish the first signal from the second signal. The terrestrial transmitter and receiver are also arranged to operate a multiple-input and multiple-output MIMO system enabling the terrestrial receiver to distinguish the second signal from the first signal.

L'invention porte sur un système de communication et sur un procédé de communication. Le système de communication comprend un émetteur satellite conçu pour émettre un premier signal devant être reçu dans une zone géographique prédéfinie par un récepteur satellite, et un émetteur terrestre conçu pour émettre un second signal devant être reçu dans la zone géographique prédéfinie par un récepteur terrestre. Les premier et second signaux partagent une bande de radiofréquence commune et le système est conçu de telle sorte que le premier signal est reçu au niveau d'une antenne associée au récepteur satellite à un premier angle par rapport à l'horizontale, le premier angle étant supérieur à un second angle par rapport à l'horizontale auquel le second signal est reçu au niveau de l'antenne. Ceci permet au récepteur satellite de distinguer le premier signal du second signal. L'émetteur et le récepteur terrestres sont également conçus pour exploiter un système entrée multiple et sortie multiple MIMO permettant au récepteur terrestre de distinguer le second signal du premier signal.

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