kit-cel / gr-lte

GNU Radio LTE receiver
GNU General Public License v3.0
394 stars 149 forks source link

Decoding errors #7

Open ahsan1115 opened 8 years ago

ahsan1115 commented 8 years ago

Hello, I have integrated the LTE Receiver and I am using an lte signal file generated from OpenLTE project. The receiver is decoding the cell id correctly but it stucks at "received message vector". There is no information for MIB. I have attached the screenshots of the output and the receiver.Could anyone help me finding out where I am going wrong? The signal parameters are 1) Bandwidth = 5MHz 2) Cell id= 272 decoding envoirnment

jarodcs commented 7 years ago

Hello, just in case anyone is around, I could run it and it shows like this:

Flowchart configured for BW=20MHz which means fftlen=1024 and N_rb_dl=50 screenshot from 2017-04-17 07-11-35

and when executing: screenshot from 2017-04-17 07-43-37

screenshot from 2017-04-17 07-44-21

screenshot from 2017-04-17 07-45-02

screenshot from 2017-04-17 07-50-34

screenshot from 2017-04-17 07-51-08

In the meantime this is what I got. I need to examine the hole frames I suppose because I dont understand why that ofdm_lte_remove_cp_cvc_0 OUT of sync! message appears.

Cheers Jarodcs

mingli001 commented 5 years ago

@ahsan1115 hello, i was using the same method with you recently but i cannot get the correct cell_id. did your file come from ' LTE_file_recorder'?

ZhaoGuangGuang2 commented 5 years ago

@mingli001 Hi,bro.I was using 'LTE_fdd_dl_file_gen.py ' generate file, but i can not get the correct cell_id, did you fix the problem? By the way,is there anyone can get the correct cell_id with the file sampled by usrp x310/n210?

mingli001 commented 5 years ago

i am sorry to give you reply until now but i have give up it a few months ago.so i do not know how to fix it.

------------------ 原始邮件 ------------------ 发件人: "ZhaoGuangGuang2"notifications@github.com; 发送时间: 2019年10月19日(星期六) 中午11:11 收件人: "kit-cel/gr-lte"gr-lte@noreply.github.com; 抄送: "默爱"1162948347@qq.com; "Mention"mention@noreply.github.com; 主题: Re: [kit-cel/gr-lte] Decoding errors (#7)

@mingli001 Hi,bro.I was using 'LTE_fdd_dl_file_gen.py ' generate file, but i can not get the correct cell_id, did you fix the problem? By the way,is there anyone can get the correct cell_id with the file sampled by usrp x310/n210?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.

ZhaoGuangGuang2 commented 5 years ago

@mingli001 Thanks for your reply. I used the following flow graph and usrp n210( actually I saved the sampling file first ,than resampled the data up to 30.72MHz), after running several times I got the correct cell_id and MIB. 兄弟是中国的不? lte_top_block_siso1_cp gr-lte_cp

mingli001 commented 5 years ago

是的呀

------------------ 原始邮件 ------------------ 发件人: "ZhaoGuangGuang2"notifications@github.com; 发送时间: 2019年10月25日(星期五) 中午11:30 收件人: "kit-cel/gr-lte"gr-lte@noreply.github.com; 抄送: "默爱"1162948347@qq.com;"Mention"mention@noreply.github.com; 主题: Re: [kit-cel/gr-lte] Decoding errors (#7)

Thanks for your reply. I used the following flow graph and usrp n210( actually I saved the sampling file first ,than resampled the data up to 30.72MHz), after running several times I got the correct cell_id and MIB. 老哥是中国的不?

------------------ 原始邮件 ------------------ 发件人: "mingli001"<notifications@github.com>; 发送时间: 2019年10月21日(星期一) 晚上10:12 收件人: "kit-cel/gr-lte"<gr-lte@noreply.github.com>; 抄送: "光光"<1546945925@qq.com>;"Comment"<comment@noreply.github.com>; 主题: Re: [kit-cel/gr-lte] Decoding errors (#7)

i am sorry to give you reply until now but i have give up it a few months ago.so i do not know how to fix it.

------------------ 原始邮件 ------------------
发件人: "ZhaoGuangGuang2"<notifications@github.com>;
发送时间: 2019年10月19日(星期六) 中午11:11
收件人: "kit-cel/gr-lte"<gr-lte@noreply.github.com>;
抄送: "默爱"<1162948347@qq.com>; "Mention"<mention@noreply.github.com>;
主题: Re: [kit-cel/gr-lte] Decoding errors (#7)

@mingli001 Hi,bro.I was using 'LTE_fdd_dl_file_gen.py ' generate file, but i can not get the correct cell_id, did you fix the problem? By the way,is there anyone can get the correct cell_id with the file sampled by usrp x310/n210?


You are receiving this because you were mentioned.
Reply to this email directly, view it on GitHub, or unsubscribe.
— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.