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WCDMA3G_ClassicalChannel


Description: Multipath fading channel of classical Doppler spectrum
Library: 3GPPFDD 10-99, Channel Model
Class: SDFWCDMA3G_ClassicalChannel

Parameters

Name

Description

Default

Sym

Unit

Type

Range

SamplingRate

sampling rate

3840000

 

 

int

(0, ∞)

SampleRate

samples per chip

4

S

 

int

[1, 32]

Dpath2

time delay of second tap relative to the first tap

310n

 

sec

real

(0, ∞)

Dpath3

time delay of third tap relative to the first tap

710n

 

sec

real

(0, ∞)

Dpath4

time delay of fourth tap relative to the first tap

1090n

 

sec

real

(0, ∞)

Dpath5

time delay of fifth tap relative to the first tap

1730n

 

sec

real

(0, ∞)

Dpath6

time delay of sixth tap relative to the first tap

2510n

 

sec

real

(0, ∞)

Gpath1_dB

average power of first tap relative to the strongest tap in dB

0

 

 

real

(-∞, 0]

Gpath2_dB

average power of second tap relative to the strongest tap in dB

-1.0

 

 

real

(-∞, 0]

Gpath3_dB

average power of third tap relative to the strongest tap in dB

-9.0

 

 

real

(-∞, 0]

Gpath4_dB

average power of fourth tap relative to the strongest tap in dB

-10.0

 

 

real

(-∞, 0]

Gpath5_dB

average power of fifth tap relative to the strongest tap in dB

-15.0

 

 

real

(-∞, 0]

Gpath6_dB

average power of sixth tap relative to the strongest tap in dB

-20.0

 

 

real

(-∞, 0]

Velocity

mobile velocity in Km/hour.

100.0

 

 

real

[0, 5000)

CarrierFrequency

carrier frequency

2.0G

 

Hz

real

(0, ∞)

Pin Inputs

Pin

Name

Description

Signal Type

1

Sig

complex envelope signal

complex

Pin Outputs

Pin

Name

Description

Signal Type

2

PSig

output signal after passing channel

complex

Notes/Equations
  1. This subnetwork model is used to pass the input signal through multipath Rayleigh fading channel that is based on a tapped-delay line model. The Doppler spectrum is classical. The maximum number of paths is 6. If Gpathi_dB(i=1,2,...6) is set to larger than 0, this tap is ignored. There is no path loss or gain in this model.
    Each firing, 1 PSig token is produced for each Sig token consumed.
  2. The schematic for this subnetwork is shown in the following figure.

    WCDMA3G_ClassicalChannel Schematic

References
  1. IS2000.2, "Physical Layer Standard for cdma2000 Spread Spectrum Systems," April 1999.
  2. TR 101 112 v3.2.0, "Universal Mobile Telecommunications System (UMTS); Selection procedures for the choice of radio transmission technologies of UMTS (UMTS 30.03 Version 3.2.0), ETSI.
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