Pre-Symbol Time (MB-OFDM)
Menu Path: tab
0 symbol-times (See MB-OFDM Standard Setups/Presets Table.)
0 to 0.224 symbol-times
defines the beginning of the time gate for each symbol in a particular band, relative to the beginning of the 128 IFFT Inverse Fast Fourier Transform samples of that symbol. The default value of 0 is the standard for the Spectral Mask and Adjacent Channel Power Ratio (ACPR Adjacent Channel Power Ratio - A measurement of the amount of interference, or power, in the adjacent frequency channel. ACPR is usually defined as the ratio of the average power in the adjacent frequency channel (or offset) to the average power in the transmitted frequency channel. ACPR is a critical measurement for CDMA transmitters and their components. It describes the amount of distortion generated due to nonlinearities in RF components. The ACPR measurement is not part of the cdmaOne standard.) tests. This setting applies to all the Band packet traces: Low | Mid | High Band Packet Time and Low | Mid | High Band Packet Spectrum.
See Also
Lengths, Intervals, and Offsets (MB-OFDM)
