Available Features (802.11a/g/j/p OFDM)
The following features are available with 802.11a/g/j/p 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. Demodulation:
- Standard
OFDM demodulation presets:
- IEEE Institute of Electrical and Electronics Engineers. A US-based membership organisation that includes engineers, scientists, and students in electronics and related fields. The IEEE developed the 802 series wired and wireless LAN standards. Visit the IEEE at http://www.ieee.org 802.11a-1999
- HIPERLAN/2
- IEEE 802.11g DSSS Direct sequence spread spectrum. The data transmission scheme (sometimes referred to as a "'modulation" scheme) used in 802.11b WLANs. DSSS uses a radio transmitter operating at a fixed centre frequency, but using a relatively broad range of frequencies, to spread data transmissions over a fixed range of the frequency band. 802.11a and 802.11g (when not operating in 802.11b mode) use Orthogonal Frequency Division Multiplexing (OFDM).-OFDM
- 802.11a/g Turbo Mode
- IEEE 802.11p DSRC
- IEEE 802.11j 10 MHz Megahertz: A unit of frequency equal to one million hertz or cycles per second.
- Variable carrier spacing (default 312.5 kHz kiloHertz: A radio frequency measurement (one kilohertz = one thousand cycles per second).)
- Pulse Search
- IQ Meas constellation measurement data
- Equalizer response measurement data
- Common Pilot Error measurement data
- Enhanced Error Vector trace data display
- Mirrored (flipped) frequency spectrums used to remove the effects of high-side mixing or complex conjugation mismatches in simulated data.
- Measurement offset and interval (similar to time gating) used to select specific data segments for analysis
- Averaging is applicable
only in the following circumstances:
- Multi-burst averaging is available for , , pre-demod , and the numeric Error Summary part of OFDM trace data
- The
following averaging types are available:
- RMS (video)
- RMS Exponential
- Peak Hold/Continuous Peak Hold
- Time gating is not available (does offer measurement offset/interval feature)
- By-pass 802.11g CCK complementary code keying preamble to demodulate the 802.11a data payload.
- of the OFDM burst
- result
These features are available with Digital Demod but not available for 802.11a/g/j/p OFDM Demodulation:
- Measurement\Reference filter
- Sync search
- IQ Mag error and IQ Phase error trace data
See Also
Available Trace Data (802.11a/g/j/p OFDM)