AWR2243BOOST: How to use mmWave studio for RX calibration

Cherry Zhou

Part Number: AWR2243BOOST

Hi team,

Here's an issue from the customer may need your help:

The customer uses AWR2243BOOST+DCA1000 to capture radar data and measure an angle reflector in an open field.

Using their own script to read the bin file and the range-dopper situation is as expected after rangefft and dopper FFT. However, when extracting the phase of data at the corner reflector location (as shown in the figure below), RX2 has a fixed offset compared to RX0 RX1 RX3 phase, which is not as expected for periodic phase change. Although anglefft of the current signal can give an approximate correct angle position, the customer is concerned that this offset may affect the accuracy of the final angle.

The following vertical coordinates are phase and horizontal are 0-12 (after using MIMO-TDM, respectively): [ TX0-RX0 , TX0-RX1 , TX0-RX2 , TX0-RX3 , TX1-RX0 , TX1-RX1 , TX1-RX2 , TX1-RX3 , TX2-RX0 , TX2-RX1 , TX2-RX2 , TX2-RX3 ]

A similar behavior occurs when testing other groups:

And the customer found here's something called RX calibration, while don't know how to do this on mmWave studio. Could you please help look into this case? Thanks.

Best Regards,

Cherry

over 2 years ago

0 Pradipta Bandyopadhyay over 2 years ago

TI__Mastermind 32865 points

Hi Cherry,

I am checking this internally with the team. Will provide an update on this by next week.

Thanks,

Pradipta.

0 Cherry Zhou over 2 years ago in reply to Pradipta Bandyopadhyay

TI__Mastermind 22235 points

Hi Pradipta,

Thanks and expect the updates.

Best,

Cherry

0 Pradipta Bandyopadhyay over 2 years ago in reply to Cherry Zhou

TI__Mastermind 32865 points

Hi Cherry,

We checked on this query with our team internally and we need some clarifications here on this query.

1) The plots which are shared can you let us know about y axis is in which units (degree or radian)

2) Rx gain calibrations will not help in resolving these phase issues.

3) It may be also due to mismatch at the antenna level. Can you check with the customer and get us more information on their antenna placement and alignment.

Thanks,

Pradipta.

0 Cherry Zhou over 2 years ago in reply to Pradipta Bandyopadhyay

TI__Mastermind 22235 points

Hi Pradipta,

Pradipta Bandyopadhyay said:
1) The plots which are shared can you let us know about y axis is in which units (degree or radian)

Radian.

Pradipta Bandyopadhyay said:
2) Rx gain calibrations will not help in resolving these phase issues.

May I know the reason?

Pradipta Bandyopadhyay said:
3) It may be also due to mismatch at the antenna level. Can you check with the customer and get us more information on their antenna placement and alignment.

The customer is using the awr2243boost single chip.

The antenna arrangement should be fixed and no special processing was done, but simply modified the DataCaptureDemo_xWR.lua in mmstudio to a MIMO-enabled mode.

-- All the parameters used in this script are default parameters used in the mmWaveStudio GUI.
-- It captures the ADC data using DCA1000.
-- The user is expected to change the configuration according to specific use-cases.
-- Change "operating_mode" in line 15 based on the usecase

--BSS and MSS firmware download
info = debug.getinfo(1,'S');
file_path = (info.source);
file_path = string.gsub(file_path, "@","");
file_path = string.gsub(file_path, "DataCaptureDemo_xWR_TDM.lua","");
fw_path   = file_path.."..\\..\\rf_eval_firmware"

--Mode of operation.
--Legacy Framing mode = 0/Advanced framing mode = 1/Continous streaming mode = 2
operating_mode = 0

--Export bit operation file
bitopfile = file_path.."\\".."bitoperations.lua"
dofile(bitopfile)

--Read part ID
--This register address used to find part number
res, efusedevice = ar1.ReadRegister(0xFFFFE214, 0, 31)
efuseES2ES3Device = bit_and(efusedevice, 0x03FC0000)
efuseES2ES3Device = bit_rshift(efuseES2ES3Device, 18)

if(efuseES2ES3Device == 0x30 or efuseES2ES3Device == 0x6) then
	partId = 2243E0
elseif(efuseES2ES3Device == 0x31 or efuseES2ES3Device == 0x32) then
	partId = 2243E1
else
	WriteToLog("Invalid Device part number\n" ..partId)
end 

--ES version
res, ESVersion = ar1.ReadRegister(0xFFFFE218, 0, 31)
ESVersion = bit_and(ESVersion, 15)

--ADC_Data file path
data_path     = file_path.."..\\PostProc"
adc_data_path = data_path.."\\adc_data.bin"

-- Download Firmware
if(partId == 2243E0) then
    BSS_FW    = fw_path.."\\AWR2243_ES1_0\\radarss\\xwr22xx_radarss.bin"
    MSS_FW    = fw_path.."\\AWR2243_ES1_0\\masterss\\xwr22xx_masterss.bin"
elseif(partId == 2243E1) then
    BSS_FW    = fw_path.."\\AWR2243_ES1_1\\radarss\\xwr22xx_radarss.bin"
    MSS_FW    = fw_path.."\\AWR2243_ES1_1\\masterss\\xwr22xx_masterss.bin"
else
    WriteToLog("Invalid Device partId FW\n" ..partId)
    WriteToLog("Invalid Device ESVersion\n" ..ESVersion)
end

-- Download BSS Firmware
if (ar1.DownloadBSSFw(BSS_FW) == 0) then
    WriteToLog("BSS FW Download Success\n", "green")
else
    WriteToLog("BSS FW Download failure\n", "red")
end
RSTD.Sleep(100)

-- Download MSS Firmware
if (ar1.DownloadMSSFw(MSS_FW) == 0) then
    WriteToLog("MSS FW Download Success\n", "green")
else
    WriteToLog("MSS FW Download failure\n", "red")
end
RSTD.Sleep(100)

-- SPI Connect
if (ar1.PowerOn(1, 1000, 0, 0) == 0) then
    WriteToLog("Power On Success\n", "green")
else
   WriteToLog("Power On failure\n", "red")
end
RSTD.Sleep(100)

-- RF Power UP
if (ar1.RfEnable() == 0) then
    WriteToLog("RF Enable Success\n", "green")
else
    WriteToLog("RF Enable failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.ChanNAdcConfig(1, 1, 1, 1, 1, 1, 1, 2, 1, 0) == 0) then
    WriteToLog("ChanNAdcConfig Success\n", "green")
else
    WriteToLog("ChanNAdcConfig failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.LPModConfig(0, 0) == 0) then
    WriteToLog("Regualar mode Cfg Success\n", "green")
else
    WriteToLog("Regualar mode Cfg failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.RfInit() == 0) then
    WriteToLog("RfInit Success\n", "green")
else
    WriteToLog("RfInit failure\n", "red")
end

RSTD.Sleep(1000)

if (ar1.DataPathConfig(1, 1, 0) == 0) then
    WriteToLog("DataPathConfig Success\n", "green")
else
    WriteToLog("DataPathConfig failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.LvdsClkConfig(1, 1) == 0) then
    WriteToLog("LvdsClkConfig Success\n", "green")
else
    WriteToLog("LvdsClkConfig failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.LVDSLaneConfig(0, 1, 1, 1, 1, 1, 0, 0) == 0) then
    WriteToLog("LVDSLaneConfig Success\n", "green")
else
    WriteToLog("LVDSLaneConfig failure\n", "red")
end
RSTD.Sleep(100)

if((operating_mode == 0) or (operating_mode == 1)) then
    if(ar1.ProfileConfig(0, 77, 6, 6, 32, 0, 0, 0, 0, 0, 0, 29.982, 0, 256, 10000, 0, 0, 94) == 0) then
        WriteToLog("ProfileConfig Success\n", "green")
    else
        WriteToLog("ProfileConfig failure\n", "red")
    end
    RSTD.Sleep(100)

    if (ar1.ChirpConfig(0, 0, 0, 0, 0, 0, 0, 1, 0, 0)== 0) then
        WriteToLog("ChirpConfig Success\n", "green")
    else
        WriteToLog("ChirpConfig failure\n", "red")
    end

    
    if (ar1.ChirpConfig(1, 1, 0, 0, 0, 0, 0, 0, 1, 0) == 0) then
        WriteToLog("ChirpConfig Success\n", "green")
    else
        WriteToLog("ChirpConfig failure\n", "red")
    end

    
    if (ar1.ChirpConfig(2, 2, 0, 0, 0, 0, 0, 0, 0, 1) == 0) then
        WriteToLog("ChirpConfig Success\n", "green")
    else
        WriteToLog("ChirpConfig failure\n", "red")
    end
end
RSTD.Sleep(100)

if(operating_mode == 0) then
    if (ar1.FrameConfig(0, 2, 1, 128, 30, 0, 1) == 0) then
        WriteToLog("FrameConfig Success\n", "green")
    else
        WriteToLog("FrameConfig failure\n", "red")
    end
elseif(operating_mode == 1) then
    if (ar1.AdvanceFrameConfig(4, 1536, 0, 0, 1, 128, 8000000, 0, 1, 1, 8000000, 0, 0, 1, 128, 8000000, 0,1, 1, 8000000, 0, 0, 1, 128, 8000000, 0, 1, 1, 8000000, 0, 0, 1, 128,8000000, 0, 1, 1, 8000000, 8, 1, 0, 1, 128, 0, 1, 128, 1, 1, 128,1, 1, 128, 1, 1) == 0) then
        WriteToLog("AdvanceFrameConfig Success\n", "green")
    else
        WriteToLog("AdvanceFrameConfig failure\n", "red")
    end
end
RSTD.Sleep(100)

-- select Device type
if (ar1.SelectCaptureDevice("DCA1000") == 0) then
    WriteToLog("SelectCaptureDevice Success\n", "green")
else
    WriteToLog("SelectCaptureDevice failure\n", "red")
end

--DATA CAPTURE CARD API
if (ar1.CaptureCardConfig_EthInit("192.168.33.30", "192.168.33.180", "12:34:56:78:90:12", 4096, 4098) == 0) then
    WriteToLog("CaptureCardConfig_EthInit Success\n", "green")
else
    WriteToLog("CaptureCardConfig_EthInit failure\n", "red")
end

if (ar1.CaptureCardConfig_Mode(1, 1, 1, 2, 3, 30) == 0) then
    WriteToLog("CaptureCardConfig_Mode Success\n", "green")
else
    WriteToLog("CaptureCardConfig_Mode failure\n", "red")
end

if (ar1.CaptureCardConfig_PacketDelay(25) == 0) then
    WriteToLog("CaptureCardConfig_PacketDelay Success\n", "green")
else
    WriteToLog("CaptureCardConfig_PacketDelay failure\n", "red")
end

if((operating_mode == 0) or (operating_mode == 1)) then

    --Start Record ADC data
    ar1.CaptureCardConfig_StartRecord(adc_data_path, 1)
    RSTD.Sleep(2000)
    
    --Trigger frame
    ar1.StartFrame()
    RSTD.Sleep(10000)
    
    --Post process the Capture RAW ADC data
    ar1.StartMatlabPostProc(adc_data_path)
    WriteToLog("Please wait for a few seconds for matlab post processing .....!!!! \n", "green")
    RSTD.Sleep(10000)
    
else --Continuous streaming 

    if(ar1.ContStrConfig(77, 9000, 94, 0, 0, 0, 0, 0, 0, 0, 0) == 0) then
        WriteToLog("ContStrConfig Success\n", "green")
    else
        WriteToLog("ContStrConfig failure\n", "red")
    end
    
    -- Start Continuous streaming of AWR device
    ar1.ContStrModEnable()

    -- Number of samples to capture
    ar1.BasicConfigurationForAnalysis(16384, 16384, 1, 0, 0, 0, 1)
    
    --Start Record continuous data
    ar1.CaptureCardConfig_StartRecord_ContinuousStreamData(adc_data_path, 0)
    RSTD.Sleep(5000)
    
    -- Stop Continuous streaming of AWR device
    ar1.ContStrModDisable()
    
    --Post process the Capture data
    ar1.ProcessContStreamADCData(adc_data_path)
    WriteToLog("Please wait for a few seconds for matlab post processing .....!!!! \n", "green")
    RSTD.Sleep(10000)
end

Thanks and regards,

Cherry

0 Pradipta Bandyopadhyay over 2 years ago in reply to Cherry Zhou

TI__Mastermind 32865 points

Hi Cherry,

We checked on this query with the team internally. Please find our comments below.

Q) Rx gain calibrations will not help in resolving these phase issues. May I know the reason?

Comment) RX Gain Calibration applies the optimum RX LNA Settings and RX IFA settings, based on RX Gain measurement results, temperature and profile’s RX Gain setting, which is same across all 4 RXs. Hence, it can not help mitigate the phase difference across RXs.

Q) It may be also due to mismatch at the antenna level. Can you check with the customer and get us more information on their antenna placement and alignment. The customer is using the awr2243boost single chip. The antenna arrangement should be fixed, and no special processing was done, but simply modified the DataCaptureDemo_xWR.lua in mmstudio to a MIMO-enabled mode

Comment) Customer can consider measuring phase for RX0,1,2,3 with corner reflector at angle=0. With this, they can find the offset for each RX and calibrate the offset during actual field measurement.

Thanks,

Pradipta.

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AWR2243BOOST: How to use mmWave studio for RX calibration