RTOS/IWR1443BOOST: How to check CSI Raw Data and process the CSI Raw

user5908600

Prodigy 10 points

Part Number: IWR1443BOOST

Tool/software: TI-RTOS

I modified the test CSI sample code(mmwave_sdk_02_01_00_04\packages\ti\drivers\test\csi_stream)

Change Content:

1.Chang to continuous output CSI data

ptrFrameCfg->numFrames = 0; //continue mode

2.Chang from one RX to four RX

ptrOpenCfg->chCfg.rxChannelEn = 0xF;

Data Size: 256(numAdcSamples) * 4(RX) * 4(I+Q) *128(numLoops)

ptrProfileCfg->numAdcSamples = 256;

ptrFrameCfg->numLoops = 128;

Parameter：

Data Format：

The raw CSI values (RX1 256*128) are shown in the table and figure below.

Question

1. I am not sure that the collected CSI data is correct, how to check?

2. I need to get speed, distance and angle from the CSI data. What calculations do I need?

over 6 years ago

0 Nitin Sakhuja over 6 years ago

TI__Mastermind 30405 points

Hello,

Please refer to the AWR1xxx Data Path app note to understand the CSI-2 output data format: http://www.ti.com/lit/an/swra555/swra555.pdf

Note that this is raw ADC data and you will need to apply Range, Doppler and AoA processing to get the point cloud, similar to what the SDK Out of Box Demo does. We do not have an Application/Matlab script available to process the raw data captured by this test.

Refer to the training videos provided at https://training.ti.com/mmwave-training-series to understand the fundamentals of FMCW signal processing that you will need to apply to get the processed point cloud output from the raw ADC data.

What is your end objective? If you are looking to capture and process raw ADC data, you can do so using the DCA1000 EVM and MMWAVE-STUDIO. Please look at the following training video which explains the data capture solution:

https://training.ti.com/dca1000-training-video?cu=1128486

Regards

-Nitin

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RTOS/IWR1443BOOST: How to check CSI Raw Data and process the CSI Raw