CDMA receiving apparatus
A CDMA receiving apparatus has an AD conversion unit ( 54, 55 ) for converting a receive signal to digital data and outputting digital data obtained by 2×oversampling; a correlation calculation unit ( 56 b ) for calculating correlation between a reference code sequence, which is a code sequence iden...
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | A CDMA receiving apparatus has an AD conversion unit (
54, 55
) for converting a receive signal to digital data and outputting digital data obtained by 2×oversampling; a correlation calculation unit (
56
b
) for calculating correlation between a reference code sequence, which is a code sequence identical with a spreading code sequence, and the digital data sequence; an interpolator (
56
d
) for performing interpolation between correlation values to thereby generate a correlation-value data sequence corresponding to 4×oversampling; and a timing decision unit (
56
f
) for obtaining a peak timing of correlation values as a delay time of a signal that arrives via a prescribed path, and deciding despread-start timing based upon this delay time. |
|---|