Abstract: An improved satellite communication system is provided comprising at least one satellite wherein each satellite provides multiple beams, a plurality of UTs, and at least one gateway connected to a PSTN and communicating with said at least one UT or with a constellation, wherein each of the UTs within a given frequency band is distinguished from another of the UTs employing a combination of TDM and NOPN codes and time slots.

Abstract: A satellite communication system is disclosed which provides at least one satellite employing multiple beams to a plurality of user terminals. A gateway is employed to connect to either a PSTN or an Internet communicating with the user terminal over the system so that the users within a given frequency range are distinguished one from the other employing orthogonal codes. The user terminal has the capability of either initiating or receiving packet data messages.

Abstract: A satellite communication system is disclosed which provides at least one satellite employing multiple beams to a plurality of user terminals. A gateway is employed to connect to either a PSTN or an Internet communicating with the user terminal over the constellation so that the users within a given frequency range are distinguished one from the other employing orthogonal codes. The user terminal has the capability of either initiating or receiving packet data messages.

Abstract: A satellite communication system is disclosed which provides multiple beams and employs a plurality of user terminals (UT) and at least one gateway connected to a PSTN which communicates with at least one UT over the constellation wherein each of the UTs within a given frequency band is distinguished one from the other employing a combination of time slots and orthogonal codes.

Abstract: A satellite communication system is disclosed which provides multiple beams and employs a plurality of user terminals (UT) and at least one gateway connected to a PSTN which communicates with at least one UT over the system wherein each of the UTs within a given frequency band is distinguished one from the other employing a combination of time slots and orthogonal codes.

Abstract: In a communication satellite constellation which uses CDMA and multiple spot beams for point-to-point communication, a system is provided for broadcasting regionally related information within a spot beam by establishing a Frequency/Walsh Code Tiling over the Earth's surface, and enabling a user terminal at a given position to tune to an appropriate frequency and Walsh Code to receive the information broadcast from a satellite over a forward beam downlink. The information, e.g. regional messages such as local weather or traffic, is transmitted to the satellite from a ground station or gateway that receives the information from a Broadcast Processing Center. In a preferred embodiment a dedicated Frequency Division Multiplex (FDM) channel within each spot beam transmits the regional broadcast messages at the Tiles in accordance with the Walsh Code designations of the Tiles.

Abstract: A satellite communications system is described. The system includes a plurality of satellites, each of which transmits one or more forward links containing traffic to one or more terrestrial users. Each forward link of each of the satellites has a maximum radiation limit. At least one terrestrial user is capable of concurrently receiving at least two of the forward links. The concurrently received forward links redundantly contain the traffic addressed to the user. A computing center has a traffic controller for allocating the traffic to the satellites using gateways. The traffic controller includes a fading model descriptive of fading characteristics for each of the one or more forward links; a link performance model descriptive of losses in each of the forward links; and a power allocation model for computing a traffic allocation for each satellite of the constellation of satellites. The traffic allocation causes transmitted satellite power to be less than the maximum radiation limit for each link.

Abstract: A method for operating a satellite communications terminal (10) that transmits one of digital voice or data signals during a frame period. The terminal includes a transmitter and a receiver, the transmitter including an RF power amplifier.