| 摘要 |
<p>The present invention provides a method to achieve frame synchronization from a received data sequence before the carrier phase and frequency offset recovery for any MPSK modulated signals on the basis of maximum likelihood theory. Two overhead configurations are considered in developing the frame synchronization algorithms (S25). One overhead configuration consists of a unique word (3a) followed by a preamble (3b), and the other consists of unique word (7) only. After the frame synchronization is achieved, the time position is known. The data-aided algorithms for carrier phase and frequency-offsets estimation (S29) are derived.</p> |
