Abstract: In satellite communication systems, the cost of a terminal often corresponds to a maximum data rate that the terminal is required to transmit towards a satellite. The higher the data rate, the higher the Effective Isotropic Radiated Power (EIRP) the terminal may be required to radiate. The EIRP of the terminal is directly proportionate to the transmission power and to the effective area of the antenna. Using coherent transmission combining may facilitate a similar EIRP while reducing the cost of the terminal through using smaller antennas and lower radiated power. Methods, apparatuses, systems, and computer readable media are described herein for facilitating coherent combining of transmissions.

Abstract: Methods are described for synchronization in a non-terrestrial network. A satellite communication terminal may receive, over its satellite link, synchronization transmissions containing one or more synchronization signals. The synchronization transmission may be received with an unknown frequency offset and/or at very low signal-to-noise ratio, and/or the synchronization signals may be formatted in any of several predefined patterns, making detection and/or demodulation of the one or more synchronization signals a challenge. According to the methods described herein, detection of at least one synchronization signal may include about simultaneous correlation in 3 dimensions of multiple instances of the at least one synchronization signal. The correlation result may then be used for generating a fine-resolution frequency correction, once applied demodulation of one or more additional synchronization signals and extraction of network access information becomes possible.

Abstract: In satellite communication systems, the cost of a terminal often corresponds to a maximum data rate that the terminal is required to transmit towards a satellite. The higher the data rate, the higher the Effective Isotropic Radiated Power (EIRP) the terminal may be required to radiate. The EIRP of the terminal is directly proportionate to the transmission power and to the effective area of the antenna. Using coherent transmission combining may facilitate a similar EIRP while reducing the cost of the terminal through using smaller antennas and lower radiated power. Methods, apparatuses, systems, and computer readable media are described herein for facilitating coherent combining of transmissions.

Abstract: In a satellite-based communication network comprised of a central hub and plurality of remote terminals configured to transmit data to and receive data from the central hub in accordance with EN 301 790 (DVB-RCS), and where one or more of these remote terminals may be configured to include an additional receiver module configured to receive MF-TDMA transmission of other remote terminals, a mesh receiver and methods for coupling the mesh receiver with the host remote terminal. In addition, described herein are methods for synchronizing the mesh receiver on the network's timing and frequency and for utilizing the available link power for achieving efficient connectivity.

Abstract: In a satellite-based communication network comprised of a central hub and plurality of remote terminals configured to transmit data to and receive data from the central hub in accordance with EN 301 790 (DVB-RCS), and where one or more of these remote terminals may be configured to include an additional receiver module configured to receive MF-TDMA transmission of other remote terminals, a mesh receiver and methods for coupling the mesh receiver with the host remote terminal. In addition, described herein are methods for synchronizing the mesh receiver on the network's timing and frequency and for utilizing the available link power for achieving efficient connectivity.

Abstract: Modern digital signals include framing. A known sequence of transmission symbols (Unique Word (UW)) included in the transmitted signal may be used by a receiver for framing synchronization. A receiver configured to receive such a signal may be configured to detect the UW even when the signal is received with some frequency uncertainty (e.g. offset or error). A method is presented for fast acquisition of symbol and/or frame timing of a signal, including in the presence of frequency uncertainty. In some embodiments, the presented method may be used for determining a frequency offset of the received signal and a location of a unique word (UW) within a frame of the received signal, wherein said determining is based on a two-dimensional search map.

Abstract: In a satellite-based communication network comprised of a central hub and plurality of remote terminals configured to transmit data to and receive data from the central hub in accordance with EN 301 790 (DVB-RCS), and where one or more of these remote terminals may be configured to include an additional receiver module configured to receive MF-TDMA transmission of other remote terminals, a mesh receiver and methods for coupling the mesh receiver with the host remote terminal. In addition, described herein are methods for synchronizing the mesh receiver on the network's timing and frequency and for utilizing the available link power for achieving efficient connectivity.

Abstract: In a satellite-based communication network comprised of a central hub and plurality of remote terminals configured to transmit data to and receive data from the central hub in accordance with EN 301 790 (DVB-RCS), and where one or more of these remote terminals may be configured to include an additional receiver module configured to receive MF-TDMA transmission of other remote terminals, a mesh receiver and methods for coupling the mesh receiver with the host remote terminal. In addition, described herein are methods for synchronizing the mesh receiver on the network's timing and frequency and for utilizing the available link power for achieving efficient connectivity.