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