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I assume that it is possible/easy to set up two WARP radios to send/receive data in a "service" type mode, such that they are not part of a registered network and do not have two-way communications. This would allow channel characterization and comparison between real channel and one generated by a channel emulator, such as Azimuth that is now "related" to WARP.
Is this correct??
In this case, does the receiver radio need to be set up manually (via USB port??) to give it signal information, or can it derive that from header??
Would signal information be retrieved via USB port??
IF so, how much data can be captured and displayed about signal quality in this mode?? (SNR, RSSI, EVM ??)
Is there information about taking this setup one step further and using a vector signal generator to be the transmit side of the link??
What standard(s) could be used and what options in the signal generator (e.g. Rohde and Schwarz SMU200 with 802.11n signal option) would need to be set??
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One thing worth clarifying first- WARP nodes don't interoperate with 802.11 devices wirelessly. The hardware could potentially support this, but no one has implemented a full 802.11 MAC/PHY (that we know of). Our OFDM reference design implements a full MAC/PHY with the capabilities we needed for our research. Parts are inspired by 802.11a (OFDM, same number and loading of subcarriers, comparable DATA-ACK turnaround times, etc.), but it definitely isn't compliant to the 802.11 spec.
Our OFDM PHY implements a full transceiver in the FPGA and operates in real-time. It includes channel estimation and equalization, EVM calculation (in the next release) and RSSI capture. We extract statistics from the design either via UART or Ethernet.
You could use a VSG as a transmitter and a WARP node as a receiver. You would need to configure both devices with whatever PHY design you need. To use our OFDM PHY, you would need to customize the VSG transmission to mimic our PHY's transmitted waveform.
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