How do I choose the resolution bandwidth (RBW) for measuring the channel power level?
A RBW equal to the channel bandwidth should be chosen if possible. A RBW higher than the carrier spacing would prevent selective analysis, and a RBW less than the channel bandwidth would require channel power processing. GSM carrier spacing is equal to 200 kHz. A RBW of 300 kHz would include the entire power of the measured channel but also part of the power from adjacent channels. A RBW of 100kHz would result in a 1.5 dB underestimation of the channel power.
Related Questions
- Spectrum analyzers usually allow you to set a resolution bandwidth (RBW) as well as a video bandwidth (VBW). Why is there no video filter in the SRM_3000?
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