Difference between revisions of "W-CDMA"
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Revision as of 20:26, 18 July 2011
Specs
W-CDMA is used by the UMTS.
| Property | Value |
|---|---|
| Modulation/Access scheme | W-CDMA |
| Channel bandwidth | 5MHz |
| Chip rate | 3.84MHz |
| Common pilot channel (CPICH) | Fixed-rate 30 Kbps, spreading factor (SF) 256 |
| Primary CPICH (CCPCH) | 14 slots in one radio frame |
| CCPCH slot | First 256 chips Tx OFF, then 18 data bits (20 bits/2560 chips in total) |
| CCPCH frame | 10ms total duration |
References
- WCDMA
Auto-correlation
- 3G UMTS at 2.1125GHz:
- Telstra NextG at 842.5MHz:
(Waterfall plot shows bursty, powerful downlink.)
