Rohde & Schwarz SMIQ02B - Table 2-24 Change of Crest Factor in the Case of Clipping

Digital Standard 3GPP W-CDMA (FDD) SMIQ
1125.5555.03 E-92.214
Table 2-24 Change of crest factor in the case of clipping
Crest factor with scenarioCLIPPING LEVEL
Downlink:
10 DPCHs "minimum
crest" 30 ksps
Downlink:
10 DPCHs "worst
crest" 30 ksps
Downlink:
10 DPCHs "average
crest" 30 ksps
Downlink:
128 DPCHs "average
crest" 30 ksps
100% 9.89 dB 14.7 dB 10.9 dB 21.7 dB
80% 8.86 dB 12.9 dB 9.39 dB 20.2 dB
50% 7.50 dB 10.1 dB 8.29 dB 16.9 dB
20% 5.50 dB 6.47 dB 6.23 dB 12.5 dB
10% 5.34 dB 6.06 dB 5.80 dB 9.57 dB
5% 5.34 dB 6.06 dB 5.80 dB 8.17 dB
Effect of clipping on the constellation shown by way of a 4-DPCH configuration:
Fig. 2-131 Constellation at clipping level 100% (not clipped)
Fig. 2-132 Constellation at clipping level 50%