Operating Manual Vol 1 - ES Documentation

Digital Standard 3GPP W-CDMA (FDD)SMIQThe same diagram for a signal with one slot only is obtained:Fig. 2-153Constellation with 16 uncorrelated channels (1 time slot)The crest factor has the value of 15.35 dB even if the CCDF has a different characteristic.2.14.3.3.4 16 DPCHs with same DataSimilar to section 2.14.3.3.2 there are strong cancellation effects and only points remain on the axes.The position of the points also depends on the choice of the channelization codes. The followingdiagram is an example for 16 channels, channelization code 0 to 15:Fig. 2-154Constellation diagram of 16 DPCHs with same dataIn this case the crest factor is 16.17 dB. The high value arises because about 94 % of the points lie atthe origin and only 6% of the points at the outer positions.1125.5555.03 2.228E-9