Abstract: A frequency offset controller using feedback, and an offset estimator are disclosed herein, as are methods for both. The estimator offset method can be used in satellite and terrestrial communications receivers. The methods can be used in receivers where the frequency offset is between 0% and 50% of the symbol rate.

Abstract: A method and apparatus are provided that perform blind acquisition of a frame burst pattern, i.e. which frames in a particular recurring sequence contain data, without prior knowledge of such information. This is performed based on detecting the presence and location of a unique word in a received frame structure. Preferably, the method and apparatus also perform blind acquisition of frame synchronization, i.e. the ability to know where the frame starts without prior knowledge of such information. Such features can be provided in a frame synchronization device, such as a downlink demodulator, which can be used in a wireless communication system, such as a satellite-based communication system. Activation logic is also provided that activates wireless communication system devices, such as components of the downlink demodulator, based on the determined burst pattern in order to save power.

Abstract: A system and method of uplink clock extraction, particularly in a satellite communication system. Jitter and sideband suppression and compensation are employed to provide an all digital method and system. A simple implementation is available using only digital components and a corresponding timing recovery algorithm. This system can operate in the absence of a timing stamp which provide better bandwidth conservation.