EDGE Filter
The EDGE filter is available as the reference filter and is used for demodulating
EDGE PSK signals. One of two filters may be used depending on the selection of
the measured filter.
Note The EDGE reference filter is available only in analyzers that have option B7A
(Enhanced Data rates for GSM Evolution—EDGE)
If the measured filter is OFF and you select the EDGE reference filter, the EDGE
reference filter is a linearized Gaussian filter as defined by ETSI (European
Telecommunications Standard Institute) GSM 05.04.
If the measured filter is EDGE (winRC) and you select the EDGE reference filter,
the EDGE reference filter is the GSM 05.04 filter described above convolved with
the EDGE (winRC) filter (the winRC filter is described below).
The BT of the EDGE reference filter is fixed. The value of BT (set with the [alpha/BT]
softkey) does not affect this filter.
EDGE (winRC) Filter
The EDGE (winRC) filter is available as the measured filter and is used for
demodulating EDGE PSK signals. This filter is a windowed, raised-cosine filter that
has an approximate 180 kHz, 6 dB bandwidth, as defined by ETSI (European
Telecommunications Standard Institute) GSM 05.05.
The BT of the EDGE (winRC) filter is fixed. The value of BT (set with the [alpha/BT]
softkey) does not affect this filter.
Digital Demodulation Concepts (Opt. AYA)
22 - 20
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