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WCDMA3G_DnLkTrCHDecoding


Description: Downlink transport channel decoding
Library: 3GPPFDD 10-99, User Equipment
Class: SDFWCDMA3G_DnLkTrCHDecoding

Parameters
Name Description Default Sym Type Range
TrCHNum number of transport channels to be multiplexed in one CCTrCH 1 Nt int [1, ∞)
TrCHNo current transport channel number 1   int [1, Nt-1]]
TrCHType transport channel type: DCH_8_kbps, DCH_16_kbps, DCH_32_kbps, DCH_64_kbps, DCH_128_kbps, DCH_256_kbps, DCH_512_kbps, DMCH_2_4_kbps, DMCH_12_2_kbps, DMCH_64_kbps, DMCH_144_kbps, DMCH_384_kbps, DMCH_2048_kbps, BCH_11_1_kbps, BCH_12_3_kbps DCH_8_kbps   enum  
TTI transmission time interval: TTI_10ms, TTI_20ms, TTI_40ms, TTI_80ms TTI_10ms   enum  
TrCHPosInCCTrCH Indicator of TrCHs position in one frame of CCTrCH: Fixed, Flexible Fixed   enum  
PhyCHNum number of physical channels 1 Nd int [1, ∞)
DL_PhyCHType downlink physical channel type: DPCH_15kbps_TF0_T2_P4, DPCH_15kbps_TF2_T2_P4, DPCH_30kbps_TF0_T2_P2, DPCH_30kbps_TF2_T2_P2, DPCH_30kbps_TF0_T2_P4, DPCH_30kbps_TF2_T2_P4, DPCH_30kbps_TF0_T2_P8, DPCH_30kbps_TF2_T2_P8, DPCH_60kbps_TF0_T2_P4, DPCH_60kbps_TF2_T2_P4, DPCH_60kbps_TF0_T2_P8, DPCH_60kbps_TF2_T2_P8, DPCH_120kbps_TF8_T4_P8, DPCH_120kbps_TF0_T4_P8, DPCH_240kbps_TF8_T4_P8, DPCH_240kbps_TF0_T4_P8, DPCH_480kbps_TF8_T8_P16, DPCH_480kbps_TF0_T8_P16, DPCH_960kbps_TF8_T8_P16, DPCH_960kbps_TF0_T8_P16, DPCH_1920kbps_TF8_T8_P16, DPCH_1920kbps_TF0_T8_P16, PCCPCH DPCH_30kbps_TF2_T2_P8   enum
RadioFrameDelayOn radio frame delay on: Yes, No Yes   enum  
† where
TF n = number of transmit format indicator bits
T n = number of transmit power control bits
P n = number of pilot bits
F n = number of feedback indicator bits

Pin Inputs

Pin

Name

Description

Signal Type

1

TFMax

maximum transport format for current service

int

2

In

input data

real

3

InSize

size of current input block

int

4

TF

input transport format

int

5

TFCI

input TFCI information

int

Pin Outputs

Pin

Name

Description

Signal Type

6

DecoderInput

the input to channel decoder

real

7

Out

output data after Transport channel decoding

int

8

CRCError

CRC error indicator

int

9

TFOut

transport format output

int

Notes/Equations
  1. This subnetwork is used to perform downlink transport channel decoding.
    The schematic for this subnetwork is shown in the following figure. It includes radio frame delay, radio frame de-segmentation, first de-interleaving, rate de-matching, channel decoding, code block concatenation and CRC checking.
    This subnetwork performs the inverse function of the WCDMA3G_DnLkTrCHCoding subnetwork.

    WCDMA3G_DnLkTrCHDecoding Schematic

References
  1. 3GPP Technical Specification TS 25.212 V3.0.0, "Multiplexing and channel coding (FDD)," October 1999.
  2. 3GPP Technical Specification TS 34.121 V3.0.0 "Terminal conformance Specification: Radio transmission and reception (FDD)," March 2000.
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