[Openbts-discuss] problems openbts on usrp B200

[blackjack <po...@ic...>]

Need help
I use 3 months to learn about openbts and add myneed functions. 
but find problem that lot of bursts received contain wrong bits , cellphone and b200 are in same one room.
here is the logs on GSML1FEC.cpp

GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error 
GSML1FEC.cpp:659:writeLowSideRx: RACH? RACHL1Decoder received BadFrame tail bits error


What result in this problem?
thank you for answers