System Level Performance Analysis of Advanced Antenna ... - Centers

Introduction
Figure 1.4: Transmission of several DPCHs under one scrambling code at the Node-B [31].
In UL, a scrambling code per UE is used. Channelisation codes are used to separate
different channels that are transmitted by a certain UE at the same time. Signals transmitted
from different UEs use different scrambling codes. Thus, when despreading the signal from
one UE, the noise and the signals coming from other UEs are attenuated with the processing
gain. In UL, a DCH is mapped onto a DPCCH and one or more (up to six) DPDCHs, which
are I-Q/code multiplexed (see Figure 1.5 and Figure 1.6). The modulation scheme for the UL
DPDCH and the UL DPCCH is binary phase shift keying (BPSK).
Figure 1.5: UL DCH structure [27].
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