Agilent Technologies ESG Specifikace stáhnout pdf (Strana 14)

1-4 Fully Coded 3GPP W-CDMA Personality User’s and Programming Guide

The Fully Coded W-CDMA Personality ESG Family Signal Generators

Overview Option 200

Uplink Channel

The signal generator in the uplink mode supports the following channels:

DPCCH The dedicated physical control channel carries the layer 1 control

information. This channel is code multiplexed onto the I and Q channels

using BPSK modulation. A typical configuration for the associated

DPCCH runs at 15 ksps with 10 bits in each timeslot.

This mode supports slot formats 0 to 5 for DPCCH channel with editing

capability. Refer to Table 4-10.

Within the DPCCH channel, the transmit power control (TPC) field

enables the user to select a pattern of commands to vary the power level

and also has trigger output capability. In addition, user arbitrary pattern

files are supported. The transport format combination indicator (TFCI)

accepts a 10 bit user pattern (default value 0000000000). The feedback

information (FBI) bit is used for closed loop transmit diversity or to select

the base station when in soft handoff conditions. Given its 15 kbps rate,

the DPCCH has 10 bits available in each slot which are allocated for the

pilot bits, TFCI bits, FBI bits, and TPC bits, according to the slot format

selection. In the case of slot format 2, 5 bits are allocated for the embedded

Pilot channel, 2 bits for TPC, 1 bit for FBI, and 2 bits for optional TFCI.

DPDCH The dedicated physical data channel carries whatever transport channel

data is mapped to it. The data rates on the DPDCH are multiples of the

base rate of 15 kbps. These data rates are after error coding, rate

matching, and multiplexing of transport channels. Each data rate

configuration is identified by a slot format number. This channel is code

multiplexed onto the I and Q channels using the BPSK modulation. A

typical DPDCH running at 60 ksps has 40 data bits in each 667

microsecond timeslot.

This mode supports slot formats 0 to 6 for DPDCH channel with editing

capability. Refer to Table 4-11.

When compared with the downlink DPCCH and DPDCH coding, the uplink DPCCH and

DPDCH coding are individually made as shown in Figure 1-2.

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Agilent Technologies ESG Specifikace Strana 14