我的课题是基于软件无线电平台的GSM物理层链路实现,我的结果图是图一,因为误码率一次就为零了,现在想分析影响误码率的因素,我对增益,衰减分别进行了增大,减小,也做了一个增大,另一个减小的对照实验,但是在六个对照实验中,误码率始终是0,找不到影响误码率的因素,请大佬指点迷津(还有一张增益增大,衰减减小的图传不上来,但是误码率还是0)

CodePudding user response:

Don't sink ah, if you have any past bosses, please please

CodePudding user response:

Used the platform, but in principle discuss,
First of all, the GSM no 2 GHZ frequency band, the frequency affect your normal simulation of the platform, suggest to correct spectrum,
TDD second, GSM has frequency is not the same, the recommended frequency of the TDD to correct has,
Finally, the 3 GPP specification specified in the mobile station received power is minimum - 103 DBM, roughly in the actual experiment phenomenon is: the mobile station - 100 DBM, accept the bit error rate of 0, 105 DBM error rate to 20%, when see you set to 44 db, according to the above phenomenon, you won't affect the bit error rate attenuation, that is to say, may you will always be in a range adjustment will not affect the bit error rate, no matter how to adjust, bit error rate will not change, suggest changes to the larger attenuation a try,
For your scenario is not clear, if convenient, can be a more detailed list, in order to discuss, oneself are interested, 514916526,

CodePudding user response:

refer to the second floor nangongxiaobai response:

used the platform, but in principle to discuss,
First of all, the GSM no 2 GHZ frequency band, the frequency affect your normal simulation of the platform, suggest to correct spectrum,
TDD second, GSM has frequency is not the same, the recommended frequency of the TDD to correct has,
Finally, the 3 GPP specification specified in the mobile station received power is minimum - 103 DBM, roughly in the actual experiment phenomenon is: the mobile station - 100 DBM, accept the bit error rate of 0, 105 DBM error rate to 20%, when see you set to 44 db, according to the above phenomenon, you won't affect the bit error rate attenuation, that is to say, may you will always be in a range adjustment will not affect the bit error rate, no matter how to adjust, bit error rate will not change, suggest changes to the larger attenuation a try,
Scenario is not clear to you, if convenient, can be a more detailed list, in order to discuss, oneself are interested, 514916526,

Thank you for your reply, this problem has been solved, is my operation simulation system, the signal does not pass to send and receive, so the bit error rate

CodePudding user response:

The platform can run the demo, can also be actual simulation, and then you just demo, so there is no any change? Ok, have time to discuss the content of the communications

CodePudding user response:

reference 4 floor nangongxiaobai response:

this platform can run the demo, can also be actual simulation, and then you just demo, so there is no any change? Ok, have time to talk more communication in aspects of content

Ok, by the way can you said how to knot, can't find where is the end

CodePudding user response:

reference light snow wind flow back to the 5 floor response:

Quote: refer to 4th floor nangongxiaobai response:

this platform can run the demo, can also be actual simulation, and then you just demo, so there is no any change? Ok, have time to talk more communication in aspects of content

Ok. By the way can you said how to knot, can't find where is the end

In the red box position you will be a knot, point he can

CodePudding user response:

reference light snow wind flow back to the 5 floor response:

Quote: refer to 4th floor nangongxiaobai response:

this platform can run the demo, can also be actual simulation, and then you just demo, so there is no any change? Ok, have time to talk more communication in aspects of content

Ok. By the way can you said how to knot, can't find where is the end

Technical project can work together,

CodePudding user response:

refer to 6th floor nangongxiaobai response:

Quote: refer to fifth floor light snow wind flow back to reply:

Quote: refer to 4th floor nangongxiaobai response:

this platform can run the demo, can also be actual simulation, and then you just demo, so there is no any change? Ok, have time to talk more communication in aspects of content

Ok. By the way can you said how to knot, can't find where is the end

In the red box position you will be a knot, point he can

Don't know if it because I use mobile, I didn't find it