[srslte-users] limeSDR

Johann T. johann.tzt at gmail.com
Fri Jul 7 11:24:06 UTC 2017


Hi Justin,

The pdsch_ue example seemed to run fine. The MIB was properly decoded (see
below).

I will try to compare the codes of cell_search and pdsch_ue and see if I
can find something.

Regards,
Johann


--------------------------------------------------------------------------

~/test/srsLTE/build/lib/examples$ ./pdsch_ue -f 796000000
linux; GNU C++ version 5.4.0 20160609; Boost_105800;
UHD_003.010.001.001-release

Opening RF device with 1 RX antennas...
Opening USRP with args:
Error opening UHD: code 11
Soapy Has Found device #0: addr=1d50:6108, driver=lime, label=LimeSDR-USB
[USB 3.0] 9062000C50C0D, media=USB 3.0, module=STREAM, name=LimeSDR-USB,
serial=0009062000C50C0D,
[INFO] Make connection: 'LimeSDR-USB [USB 3.0] 9062000C50C0D'
[INFO] Estimated reference clock 30.7197 MHz
[INFO] Selected reference clock 30.720 MHz
[INFO] Device name: LimeSDR-USB
[INFO] Reference: 30.72 MHz
[INFO] Init LMS7002M(0)
[INFO] LMS7002M cache /home/tno/.limesuite/LMS7002M_cache_values.db
[INFO] Ver=7, Rev=1, Mask=1
[INFO] LMS7002M calibration values caching Enable
CGEN: Freq=80 MHz, VCO=2.56 GHz, INT=82, FRAC=349525, DIV_OUTCH_CGEN=15
M=156, N=3, Fvco=1040.000 MHz
16: 02 A0 AA
16: A2 AA 2C
1132: AA DA 55
phase: min 31.2; max 197.3; selected 114.2)
M=156, N=3, Fvco=1040.000 MHz
M=182, N=7, Fvco=1040.000 MHz
16: AA 52 D5
phase: min 5.2; max 176.5; selected 90.9)
M=182, N=7, Fvco=1040.000 MHz
M=156, N=3, Fvco=1040.000 MHz
16: FF AF AA
16: AA AA 2A
1615: AA DA 55
phase: min 31.2; max 197.3; selected 114.2)
M=156, N=3, Fvco=1040.000 MHz
M=156, N=3, Fvco=1040.000 MHz
16: 77 9D 3B
16: AA DC 75
16: AA 52 D5
phase: min 15.6; max 176.5; selected 96.1)
M=156, N=3, Fvco=1040.000 MHz
[INFO] Rx Filter calibrated from cache
[INFO] Tx Filter calibrated from cache
M=156, N=3, Fvco=1040.000 MHz
phase: min 5.2; max 360.0; selected 182.6)
M=156, N=3, Fvco=1040.000 MHz
M=182, N=7, Fvco=1040.000 MHz
phase: min 5.2; max 360.0; selected 182.6)
M=182, N=7, Fvco=1040.000 MHz
M=156, N=3, Fvco=1040.000 MHz
phase: min 5.2; max 360.0; selected 182.6)
M=156, N=3, Fvco=1040.000 MHz
M=156, N=3, Fvco=1040.000 MHz
phase: min 5.2; max 360.0; selected 182.6)
M=156, N=3, Fvco=1040.000 MHz
[INFO] Rx Filter calibrated from cache
[INFO] Tx Filter calibrated from cache
Starting AGC thread...
Tunning receiver to 796.000 MHz
SetFrequency using cache values vco:1, csw:209
TODO: implement rf_soapy_rx_wait_lo_locked()
Searching for cell...
Using Volk machine: avx2_64_mmx_orc
CGEN: Freq=245.76 MHz, VCO=2.4576 GHz, INT=79, FRAC=0, DIV_OUTCH_CGEN=4
############################################################
Rx calibration using RSSI INTERNAL ON BOARD loopback
Rx ch.A @  796 MHz, BW: 30 MHz, RF input: LNAL, PGA: 20, LNA: 15, TIA: 3
Rx calibration: using cached values
Rx calibration values found in cache:
   | DC  | GAIN | PHASE
---+-----+------+------
I: |   0 | 2047 | 0
Q: |   0 | 2047 |
############################################################
 Found Cell_id:   0 CP: Normal  , DetectRatio= 0% PSR=0.00, Power=-inf dBm
*Found Cell_id: 202 CP: Normal  , DetectRatio=100% PSR=8.39, Power=-64.3 dBm
 Found Cell_id: 224 CP: Normal  , DetectRatio=40% PSR=4.66, Power=-65.3 dBm
Decoding PBCH for cell 202 (N_id_2=1)
Setting sampling rate 11.52 MHz
CGEN: Freq=368.64 MHz, VCO=2.21184 GHz, INT=71, FRAC=0, DIV_OUTCH_CGEN=2
M=180, N=4, Fvco=1036.800 MHz
16: 01 A0 AA
16: A2 AA 7C
phase: min 30.0; max 198.0; selected 114.0)
M=180, N=4, Fvco=1036.800 MHz
M=180, N=4, Fvco=1036.800 MHz
16: 55 AD 3A
16: 66 DC 3D
16: AA 58 75
16: AA 5A D5
phase: min 24.0; max 174.0; selected 99.0)
M=180, N=4, Fvco=1036.800 MHz
 - Cell ID:         202   5,9, FrameCnt: 0, State: 1
 - Nof ports:       2
 - CP:              Normal
 - PRB:             50
 - PHICH Length:    Normal
 - PHICH Resources: 1/6
 - SFN:             664
Decoded MIB. SFN: 664, offset: 0
[INFO] L 1392640
Rx: 34,701 MB/s, SNR:  0,1 dB, PDCCH-Miss: 63,27%, PDSCH-BLER: 34,69%%
Rx: 34,701 MB/s, SNR: -0,0 dB, PDCCH-Miss: 56,57%, PDSCH-BLER: 42,42%
CFO:  -0Rx pktLoss: ts diff: 5582800  pktLoss: 4104PDSCH-BLER: 43,40%
Rx: 10,837 MB/s, SNR: -0,1 dB, PDCCH-Miss: 54,10%, PDSCH-BLER: 45,08%
Rx pktLoss: ts diff: 5586880  pktLoss: 4107
Rx: 34,734 MB/s, SNR: -0,2 dB, PDCCH-Miss: 67,44%, PDSCH-BLER: 31,98%
CFO:  -1,08 kHz, SNR: -0,5 dB, PDCCH-Miss: 69,06%, PDSCH-BLER: 30,39%
SIGINT received. Exiting...dB, PDCCH-Miss: 100,00%, PDSCH-BLER:  0,00%0%
Rx: 19,160 MB/s
Hangup






On Fri, Jul 7, 2017 at 12:20 PM, Justin Tallon <justin.tallon@
softwareradiosystems.com> wrote:

> Hey Robson!
>
> Are you able to find the Lime Device by running "SoapySDRUtil --find " ?
>
> If so, are you able to run the pdsch_ue example?
>
>
> ____
> Justin Tallon Ph.D.
>
> Software Radio Systems (SRS)
> http://www.softwareradiosystems.com
>
> +353-86-067-0753 <+353%2086%20067%200753> | justin.tallon at softwareradiosys
> tems.com
>
> On Fri, Jul 7, 2017 at 6:28 AM, Robson Pereira <robson.apereira at gmail.com>
> wrote:
>
>> I get errors with LimeSDR while it works with USRP B210. I'm not sure if
>> this is a known issue...
>>
>>
>> ~/srsLTE/build/lib/examples$ *./cell_search -b 20*
>> < ... >
>> Uploading DC/IQ calibration firmware
>> -- L
>> MCU Ref. clock: 30.72 MHz
>> MCU algorithm time: 215 ms
>> *Error code 0x1 was returned during streaming. Aborting.*
>> *Error code 0x1 was returned during streaming. Aborting.*
>>
>>
>> ~/srsLTE/build/srsue/src$ *sudo ./srsue ue.conf.example*
>> < ... >
>> Rx calibration using RSSI INTERNAL ON BOARD loopback
>> Rx ch.A @ 2685 MHz, BW: 30 MHz, RF input: LNAL, PGA: 20, LNA: 15, TIA: 3
>> Rx calibration: using cached values
>> Rx calibration values found in cache:
>> | DC | GAIN | PHASE
>> ---+-----+------+------
>> I: | 0 | 2047 | 0
>> Q: | 0 | 2047 |
>>
>> *Searching for cell...*
>> *Searching for cell...*
>>
>> On Thu, Jul 6, 2017 at 7:13 AM, <srslte-users-request at lists.so
>> ftwareradiosystems.com> wrote:
>>
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