| 摘要 |
2055470 9014727 PCTABS00002 There is provided a scheme for centering data prior to detection. It comprises: determining carrier frequency error, and pre-adjusting the data detection process to compensate for that error throughout the ensuing data detection. This scheme for reliable multilevel data detection further comprises: upon detection of carrier (C2, R5, G1) presence, determining carrier frequency error, gating a voltage associated with the frequency error (R1, R3, C1) to the differential amplification process to establish common mode rejection and compensating for that error throughout the ensuing multi-level data detection, and then analog-to-digital conversion of the differentially amplified multi-level data. A scheme for computationally centering the subsequent data detected (C3, R4) to compensate for the error is also provided.
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