Page tree
Skip to end of metadata
Go to start of metadata


WCDMA3G_CC


Description: Convolutional encoder
Library: 3GPPFDD 10-99, Channel Coding
Class: SDFWCDMA3G_CC

Parameters

Name

Description

Default

Type

LinkDir

link direction: Downlink, Uplink

Downlink

enum

CodeType

convolutional code type: rate 1/2 K 9 g0 0561 g1 0753, rate 1/3 K 9 g0 0557 g1 0663 g2 0711

rate 1/2 K 9 g0 0561 g1 0753

enum

TrCHType

transport channel type(8kbps for no coding in downlink): 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

Pin Inputs

Pin

Name

Description

Signal Type

1

In

input code block data

int

2

TF

input transport format

int

Pin Outputs

Pin

Name

Description

Signal Type

3

Out

output data after coding

int

Notes/Equations
  1. This model is used to implement convolutional coding (or no coding). Coding is performed block-by-block; at the end of each input block, K-1 tail bits (value 0, K is constraint length) are padded while convolutional coding is performed.
    Coding schemes are listed in the following table.
    Convolutional Coding Schemes
    TrCHType LinkDir CodeType Coding
    DCH_8_kbps Downlink rate 1/2 K 9 g0 0561 g1 0753 no coding
    Uplink rate 1/3 K 9 g0 0557 g1 0663 g2 0711 rate 1/3 coding
    DCH_16_kbps Downlink rate 1/2 K 9 g0 0561 g1 0753 rate 1/2 coding
    Uplink rate 1/3 K 9 g0 0557 g1 0663 g2 0711 rate 1/3 coding
    DCH_32_kbps Downlink rate 1/2 K 9 g0 0561 g1 0753 rate 1/2 coding
    Uplink rate 1/3 K 9 g0 0557 g1 0663 g2 0711 rate 1/3 coding
    DCH_64_kbps any any zero output
    DCH_128_kbps any any zero output
    DCH_256_kbps any any zero output
    DCH_512_kbps any any zero output
    DMCH_2_4_kpbs any rate 1/3 K 9 g0 0557 g1 0663 g2 0711 rate 1/3 coding
    DMCH_12_2_kpbs any rate 1/3 K 9 g0 0557 g1 0663 g2 0711 rate 1/3 coding
    DMCH_64_kbps any any zero output
    DMCH_144_kbps any any zero output
    DMCH_384_kbps any any zero output
    DMCH_2048_kbps Uplink any zero output
    BCH_11_1_kbps Downlink rate 1/2 K 9 g0 0561 g1 0753 rate 1/2 coding
    BCH_12_3_kbps Downlink rate 1/2 K 9 g0 0561 g1 0753 rate 1/2 coding

    The number of input and output tokens are listed in the following table.
    Input and Output Tokens
    LinkDir TrCHType TTI Input Tokens Output Tokens
    Downlink DCH_8_kbps \(No Coding) 10 ms 96 96
    20 ms 176 176
    40 ms 336 336
    80 ms 656 656
    Downlink DCH_16_kbps \(1/2 CC) 10 ms 184 368
    20 ms 344 688
    40 ms 672 1344
    80 ms 1320 2640
    Downlink DCH_32_kbps \(1/2 CC) 10 ms 344 688
    20 ms 672 1344
    40 ms 1320 2640
    80 ms 2628 5256
    Uplink DCH_8_kbps \(1/3 CC) 10 ms 104 312
    20 ms 184 552
    40 ms 344 1032
    80 ms 672 2016
    Uplink DCH_16_kbps \(1/3 CC) 10 ms 184 552
    20 ms 344 1032
    40 ms 672 2016
    80 ms 1320 3960
    Uplink DCH_32_kbps \(1/3 CC) 10 ms 344 1032
    20 ms 672 2016
    40 ms 1320 3960
    80 ms 2628 7884
    Downlink/Uplink DMCH_2_4_kbps (1/3 CC) 40 ms 120 360
    Downlink/Uplink DMCH_12_2_kbps (1/3 CC) 20 ms 268 804
    Downlink BCH_11_1_kbps (1/2 CC) 10 ms 135 270
    Downlink BCH_12_3_kbps (1/2 CC) 20 ms 270 540

References
  1. 3GPP Technical Specification TS25.212 V3.0.0,"Multiplexing and Channel Coding (FDD)," October 1999.
  2. 3GPP Technical Specification TS25.101 V3.0.0,"UE Radio transmission and Reception (FDD)," October 1999.
  3. 3GPP Technical Specification TS25.104 V3.0.0,"UTRA(BS) FDD: transmission and Reception," October 1999.
  • No labels