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
- 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
- 3GPP Technical Specification TS25.212 V3.0.0,"Multiplexing and Channel Coding (FDD)," October 1999.
- 3GPP Technical Specification TS25.101 V3.0.0,"UE Radio transmission and Reception (FDD)," October 1999.
- 3GPP Technical Specification TS25.104 V3.0.0,"UTRA(BS) FDD: transmission and Reception," October 1999.