MB-OFDM Demod Properties Dialog Box

Menu Path: MeasSetup > MB-OFDM Demod Properties

The MB-OFDM Orthogonal Frequency Division Multiplexing: OFDM employs multiple overlapping radio frequency carriers, each operating at a carefully chosen frequency that is Orthogonal to the others, to produce a transmission scheme that supports higher bit rates due to parallel channel operation. OFDM is an alternative tranmission scheme to DSSS and FHSS. Demod Properties dialog box contains parameters that configure the VSA to demodulate MB-OFDM modulated signals. The MB-OFDM demodulator must be selected before this dialog box is available (MeasSetup > Measurement Type > Other standard formats > Ultra Wideband MB-OFDM).

The MB-OFDM Demod Properties dialog box contains the following property tabs:

• Format Tab: Accesses the MB-OFDM demodulation configuration parameters necessary for the VSA to lock on to and demodulate the test signal.
• Time Tab: Accesses the signal capture configuration parameters to select the pulse search length and to isolate a segment of the time record for further viewing and data analysis.
• Packet Tab: Accesses packet setup parameters including Resolution Bandwidth (RBW Resolution Band Width (RBW or ResBW): specifies the minimum frequency bandwith that two separate frequency spectra can be resolved and viewed seperately. For FFT (digital) based VSA's the process is equivalent to passing a time-domain signal through a bank of bandpass filters, whose center frequencies correspond to the frequencies of the FFT bins. For a traditional swept-tuned (non-digital) spectrum analyzer, the resolution bandwidth is the bandwidth of the IF filter which determines the selectivity.) and packet/symbol timing parameters.
• Advanced Tab: Accesses advanced parameters used to demodulate nonstandard and/or user defined MB-OFDM signals and to manipulate trace data results.

See Also

Setting up a MB-OFDM Measurement

Using Standard Setups/Presets (MB-OFDM)