[srslte-users] run pdsch_enodeb and pdsch_ue on B210

[wangdm at seu.edu.cn]

Hi,

I'm trying to do the example of srsLTE by using B210. I use the following commend, but I found pdsch_ue always "could not find any cell in this frequency".

At one PC I got the following message:

~/src/srsLTE-master/build/srslte/examples$ sudo ./pdsch_enodeb -f 2450000000 -g 80
linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.009.002-0-unknown

Opening RF device...
Opening USRP with args: type=b200,recv_frame_size=9232,send_frame_size=9232
-- Detected Device: B210
-- Operating over USB 3.
-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 16.000000 MHz... 
-- Actually got clock rate 16.000000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Setting master clock rate selection to 'automatic'.
-- Asking for clock rate 32.000000 MHz... 
-- Actually got clock rate 32.000000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
Trying to dynamically change Master clock...
-- Asking for clock rate 16.000000 MHz... 
-- Actually got clock rate 16.000000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
Master clock is configurable. Using reduced symbol sizes and sampling rates.
-- Asking for clock rate 23.040000 MHz... 
-- Actually got clock rate 23.040000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
Setting sampling rate 5.76 MHz
Set TX gain: 80.0 dB
Set TX freq: 2450.00 MHz
- Resource Allocation Type: Type 0
+ Resource Block Group Size: 2
+ RBG Bitmap: 0x1fff
- Modulation and coding scheme index: 1
- HARQ process: 0
- New data indicator: No
- Redundancy version: 0
- TPC command for PUCCH: --
- PRB Bitmap Assignment 0st slot:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 
- PRB Bitmap Assignment 1st slot:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 
- Number of PRBs: 25
- Modulation type: QPSK
- Transport block size: 904
Type new MCS index and press Enter: Using Volk machine: avx_64_mmx




At another PC I run pdsch_ue and get the following message:

~/src/srsLTE-master/build/srslte/examples$ sudo ./pdsch_ue -f 2450000000 -r 1234
linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.009.002-0-unknown

Opening RF device...
Opening USRP with args: type=b200,recv_frame_size=9232,send_frame_size=9232
-- Detected Device: B210
-- Operating over USB 3.
-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 16.000000 MHz... 
-- Actually got clock rate 16.000000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Setting master clock rate selection to 'automatic'.
-- Asking for clock rate 32.000000 MHz... 
-- Actually got clock rate 32.000000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
Trying to dynamically change Master clock...
-- Asking for clock rate 16.000000 MHz... 
-- Actually got clock rate 16.000000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
Master clock is configurable. Using reduced symbol sizes and sampling rates.
Starting AGC thread...
-- Asking for clock rate 30.720000 MHz... 
-- Actually got clock rate 30.720000 MHz.
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
Tunning receiver to 2450.000 MHz
Searching for cell...
Using Volk machine: avx_64_mmx
Could not find any cell in this frequency
Cell not found after 0 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Could not find any cell in this frequency
Cell not found after 1 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Could not find any cell in this frequency
Cell not found after 2 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Could not find any cell in this frequency
Cell not found after 3 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Could not find any cell in this frequency
Cell not found after 4 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Could not find any cell in this frequency
Cell not found after 5 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Could not find any cell in this frequency
Cell not found after 6 trials. Trying again (Press Ctrl+C to exit)




I also try another program  cell_search,

It also cannot find the cell from pdsch_enodeb. But this program can find commercial LTE cell around me.

Thank you for your kind help.

Best regards,
Dongming









wangdm at seu.edu.cn
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