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Ansoft Designer / Ansys Designer 在线帮助文档：

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CDMA/IS-95 >
   Walsh Function Modulator (WALSHMOD)       

Walsh Function Modulator (WALSHMOD)

 

 


Property

Description

Units

Default

Range/Type

N

Walsh Order

None

6

(0, Inf)/Integer

RIN

Input impedance

Ohm

Inf

(0, Inf]/Real

ROUT

Output impedance

Ohm

0

[0, Inf)/Real

WF_NUM

Walsh Function Number

None

0

[0,2N-1)/Real

Ports

Input

Input signal (real)

Output

Output signal (real)

 

Notes

This model interprets the incoming signal as a binary signal. An input greater than 0.5V is inter­preted as a 1; any other input level is interpreted as a 0. The Walsh Function Modulator divides the input sample into 2N samples, each with the same amplitude as the input signal, but with a time step that is reduced 2N times. It then correlates (XORs) them with the corresponding 2N Walsh functions specified by WF_NUM to produce the output.

Netlist Form

WALSHMOD:Name n1 n2 N=val WF_NUM=val [Rin=Val] [Rout=Val]

Netlist Example

WALSHMOD:1 1 2 N=6 WF_NUM=0

References

1. Mobile-Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System” TIA/EIA/IS-95-A, May 1995.



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