SYNCHRONIZATION AND ACQUISITION IN RADIO COMMUNICATION SYSTEMS

摘要

Systems and methods are described for synchronizing a receiver to a received signal and other signal processing approaches and/or components associated with the receiver. For example, a signal (e.g., a radio frequency (RF) signal such as a broadband TV signal in UHF and VHF frequencies) can be received at a receiver. Before the signal is provided to other components of the receiver, the signal can be processed in a component of the receiver commonly known as the digital front-end, where such processing can include amongst others, various synchronization and acquisition techniques.

主权项

1. A method, comprising:
receiving an orthogonal frequency-division multiplexing (OFDM) transmission; analyzing a first portion of the OFDM transmission, the first portion including at least a fixed pilot symbol that carries signaling fields including one or more transmission parameters; determining a coarse carrier frequency offset (CFO) fractional compensation of the OFDM transmission based at least in part on the first portion of the OFDM transmission; determining a guard interval of the OFDM transmission; determining, based at least in part on the guard interval, a fine CFO fractional compensation of the OFDM transmission; performing a Fast Fourier transform (FFT) of the OFDM transmission based at least in part on the CFO fractional compensation and the fine CFO fractional compensation; and tracking at least one of a sampling clock offset (SFO) or a CFO based at least in part on the FFT of the OFDM transmission, wherein at least one of the SFO or the CFO is configured to synchronize at least a portion of a receiver.