Is-95 Filters - Agilent Technologies 89410A Operator's Manual

Typical applications for user defined filters include:
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See "Creating User Defined Signals" earlier in this book for an example of how to
create, view, and apply a user defined filter.
The documentation for the Standard Data Format Utilities which accompanies this
analyzer also includes a section (Mathcad Examples) describing how to create
waveforms and filters for use with this analyzer.
Special consideration for MSK
Matched filtering of a demodulated signal is not available with the MSK
demodulators. The measured filter is normally off. A user defined filter can be
selected. Its primary use is for additional band-limiting and channel equalization.

IS-95 Filters

The analyzer includes two filters that conform to US CDMA digital cellular standard
IS-95:
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These filters let you measure base stations or mobile phones that conform to US
CDMA digital cellular standard IS-95. The IS-95 base-phase EQ filter is the inverse
of the forward all-pass phase-compensation filter that is specified for IS-95
base-station transmission. The IS-95 Chebyshev filter is the filter specified in IS-95
that provides overall channel filtering for both base-to-mobile and mobile-to-base
links.
The IS-95 base-phase EQ filter is applied to the I/Q measured signal. The
IS-95 Chebyshev filter is applied to the I/Q reference signal. For additional details,
see online help (press [Help], [1] to display the online help index, then scroll through
the index and select IS-95 base phase EQ Softkey or IS-95 Chebyshev Softkey).
Hint
Select [ CDMA BASE ] or [ CDMA MOBILE ] to automatically configure the analyzer for
base-station or mobile measurements. Both softkeys are located under
[Instrument Mode], [demodulation setup], [demod format], [standard setups].
Custom filters other than those provided. In this case both measured and
reference filters are user defined.
Modified filters which are based on the raised cosine filter but add channel
equalization. In this case the measure filter is a user defined filter and the
reference filter is standard.
IS-95 base-phase EQ filter.
IS-95 Chebyshev filter.
Digital Demodulation Concepts (Opt. AYA)
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