15 Threads found on edaboard.com: Ber Curves
soft means temporary error after defined number of retries such as 4 or 16 etc..
hard means permanent error after defined number of retries and depending on system may or may not include error correction.
ber vs SNR curves shows probability of an error. Thus the length of the message affects message error rate which ca
Elementary Electronic Questions :: 01-19-2015 00:32 :: SunnySkyguy :: Replies: 1 :: Views: 334
im verifiying my QPSK architecture and quit confuse on whether to choose SNR or Eb/No in the AWGN block. is there any difference between SNR and Eb/No to obtain ber? what is the difference if there are?
Digital Signal Processing :: 05-16-2012 07:18 :: asraf :: Replies: 7 :: Views: 6110
Hi, I am simulating the fading effect of multipath in wireless communications. I am using a contributed model in opnet the model ID- 418, Any one used this before can you please answer my questions
1.I am getting a very high spike for an instance for the nearest node why it is so?
2. how can see the SNR and ber curves, which i cannot see now when
Network :: 03-27-2012 16:49 :: dileepkarichery :: Replies: 0 :: Views: 695
I want to interface system level results (C/I) to link level results (Frame Erasure Rates), so I need some mapping tables and statistical link level results/ curves for GSM link level performance (ber vs. C/I and FER vs. ber). Does anybody have link level mapping tables ?
Digital communication :: 01-08-2012 16:06 :: Ahmed Alaa :: Replies: 0 :: Views: 1145
I want to simulate spread spectrum techniques and other coding techniques like cdma and get their ber to SNR curves in presence of jammers or other interfering signals.I want to test jammers of different specifications and test that if my transmitter and reciever are location "x" distance apart then how would be the transmission..
Can any body r
Digital communication :: 03-01-2011 09:19 :: mosabja :: Replies: 0 :: Views: 669
I am studying how bad is demodulation in case of not having a real match filter as the first block in the reception of the signal. do you know where could I find curves which take into account this error in the filter?? The only curve I found is the teoretical one and I guess, its behaviour is not the same
Thanks in advance!!
Digital communication :: 01-23-2011 14:09 :: Xavipersonal :: Replies: 0 :: Views: 1705
Hi , I implement an OFDM System with Simulink , by regular search i found that sent one , but when i run it to get ber Vs EbNo , it get high curves and values rather than expected to be.
i use QPSK as modulation technique , so as i know the ber curve of OFDM must be the same as QPSK system ,
is that true , and if, what is the wrong in (...)
Digital Signal Processing :: 08-25-2010 23:56 :: ReComm :: Replies: 3 :: Views: 1092
Hi, Can some one tell me what kinds of information we can get from ber curves?
I know it puts bit error rate against signal power, but I see so many research papers where for e.g. cdma is compared against ofdma by just showing graphs but don't really tell the significance of comparison.
It depends on th
Digital communication :: 12-21-2009 16:30 :: saeddawoud :: Replies: 4 :: Views: 3934
I am trying to mimic the results in this paper,
thus I expect the curves of MMSE and ZF equalizaiton to be worse than AWGN, while better than no equalization at all. However the tests I ran didnt make sense.
here is the graph and scripts..
THanks in advance.
Digital communication :: 01-08-2009 14:19 :: kel8157 :: Replies: 4 :: Views: 1225
u need to get the ber curves and know the minimum SNR at the demodulator , and from the SNR , u can calculate the noise figure , of the system , by knowing the noise floor which depends on the channel BW
RF, Microwave, Antennas and Optics :: 03-15-2008 16:45 :: khouly :: Replies: 4 :: Views: 960
Can anyone plz tell me or fwd me some literature on viterbi equilizer.
I would appriciate if they also give some SNR vs ber curves.
Digital communication :: 01-23-2008 20:02 :: bee :: Replies: 1 :: Views: 1270
does anyone have the simulation results for WCDMA downlink .... any results or curves are welcomed (like ber ,spectrum ...etc )
Digital communication :: 07-03-2007 09:32 :: makanaky :: Replies: 2 :: Views: 1103
Any help will be useful
Digital communication :: 02-24-2007 10:54 :: VanHelsing21 :: Replies: 3 :: Views: 1861
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Software Links :: 01-14-2007 19:01 :: mg777 :: Replies: 0 :: Views: 441
The higher(Better) the SNR the Better the ber.
You need know the type of modulation to be used, Bandwidth,
the noise of the system etc...
Look up "Link Budget", Sensitivity (Equation), Eb/No curves, and ber curves.
SNR is one variable of several that determine what the likelihood of receiving
Correct data is. (...)
Digital communication :: 12-15-2005 18:38 :: Element_115 :: Replies: 14 :: Views: 69432