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Description: 3GPP downlink RF receiver
Library: 3GPPFDD, User Equipment
Class: TSDF3GPPFDD_RF_Downlink_Receiver

Parameters

Name

Description

Default

Unit

Type

Range

SpecVersion

version of specifications: Version_03_00, Version_12_00, Version_03_02

Version_12_00

 

enum

 

RLoad

input resistance

DefaultROut

Ohm

real

(0, ∞)

FCarrier

frequency of carrier

2140e6

Hz

real

(0, ∞)

Phase

demodulator reference phase in degrees

0

deg

real

(∞, ∞)

VRef

reference voltage for output power calibration

3.2921

V

real

(0:inf )

SamplesPerChip

samples per chip

8

 

int

[2:32]

ExcessBW

excess bandwidth of raised cosine filters

0.22

 

real

(0.0:1.0)

FilterLength

length of raised cosine filters in number of symbols

16

 

int

[2:128]

RefCh

reference measurment channel: DL_REF_12_2, DL_REF_64, DL_REF_144, DL_REF_384

DL_REF_12_2

 

enum

 

ScrambleCode

index of scramble code

0

 

int

[0:511]

ScrambleOffset

scramble offset in downlink channels

0

 

int

[0:15]

ScrambleType

scramble type: Normal, RightAlternate, LeftAlternate

Normal

 

enum

 

MaxDelaySample

maximum delay boundary, in terms of samples

1

 

int

[0:2559]

ChannelType

select the channel type to be processed: CH_GAUSSIAN, CH_FADING

CH_GAUSSIAN

 

enum

 

ChannelInfo

fading channel information source: Known, Estimated

Known

 

enum

 

ChannelInfoOffset

offset between spread code and channel information in terms of sample

0

 

int

[0, MaxDelaySample]

PathSearch

path search frequency: EverySlot, Once

Once

 

enum

 

SearchMethod

path search method: Coherent, NonCoherent, Combined

Coherent

 

enum

 

SearchSlotsNum

number of slots for path search

6

 

int

[1:6]

PathNum

number of Rake fingers

1

 

int

[1:6]

PathDelaySample

delay for each finger, in terms of samples

0

 

int array

[0: MaxDelaySample];
array size shall be equal to PathNum

DPCH_SpreadCode

spread code index of DPCH

127

 

int

[0, DPCH Spread Factor -1 ]

CPICH

select if CPICH is presented: CPICH_Active, CPICH_Deactive

CPICH_Deactive

 

enum

 

RxPCCPCH

select if PCCPCH is presented: PCCPCH_Active, PCCPCH_Deactive

PCCPCH_Deactive

 

enum

 

RxSCCPCH

select if SCCPCH is presented: SCCPCH_Active, SCCPCH_Deactive

SCCPCH_Deactive

 

enum

 

SCCPCH_SlotFormat

SCCPCH slot format

0

 

int

[0:17]

SCCPCH_SpreadCode

SCCPCH spread code

15

 

int

[0, SCCPCH Spread Factor-1]

SCCPCH_Carrying

common channel that SCCPCH carries: PCH, NonPCH

NonPCH

 

enum

 

Pin Inputs

Pin

Name

Description

Signal Type

1

RFin

input RF signal

timed

2

DTCH

DTCH data

int

3

DCCH

DCCH data

int

4

DPCH

DPCH data

real

5

inChM

channel information

multiple complex

Pin Outputs

Pin

Name

Description

Signal Type

6

DTCHout

DTCH data

int

7

RefDTCHout

synchronized reference DTCH

int

8

DTCH_CRC

DTCH CRC

int

9

DCCHout

DCCH data

int

10

RefDCCHout

synchronized reference DCCH

int

11

DCCH_CRC

DCCH CRC

int

12

DPCHout

DPCH data

int

13

RefDPCHout

synchronized reference DPCH

int

Notes/Equations
  1. This subnetwork model is the downlink RF receiver for 3GPP FDD. This subnetwork consists of hierarchical models. The timed demodulator is at the front of this subnetwork; the demodulated I/Q signal is sent to the baseband receiver.
    The schematic for this subnetwork is shown in the following figure.

  2. Refer to 3GPPFDD_DL_Rx_RefCH and 3GPPFDD_UL_Rake for further information.
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