Comments on: Viterbi decoder http://www.dsplog.com/2009/01/04/viterbi/ Signal Processing for Communication Thu, 04 Mar 2010 16:31:39 +0530 http://wordpress.org/?v=2.8.4 hourly 1 By: Ajeesh http://www.dsplog.com/2009/01/04/viterbi/#comment-17660 Ajeesh Thu, 31 Dec 2009 09:29:10 +0000 http://www.dsplog.com/?p=379#comment-17660 Sir, We want to compute with binary convolutional code of rate=1/2, generator polynomial- [171, 133] Octal..... Kindly help us pleaseeeeeeeee......... Sir,
We want to compute with binary convolutional code of rate=1/2, generator polynomial- [171, 133] Octal…..
Kindly help us pleaseeeeeeeee………

]]> By: Ajeesh http://www.dsplog.com/2009/01/04/viterbi/#comment-17658 Ajeesh Thu, 31 Dec 2009 09:27:12 +0000 http://www.dsplog.com/?p=379#comment-17658 Sir, Sir,

]]> By: Krishna Sankar http://www.dsplog.com/2009/01/04/viterbi/#comment-16706 Krishna Sankar Mon, 07 Dec 2009 00:11:37 +0000 http://www.dsplog.com/?p=379#comment-16706 @Harish: Well, I have assumed BPSK in this simulation. Even if you are using BPSK, I believe you might be passing on the received hard decision bits to the Viterbi decoder. So the underlying path metrics computation should still hold good. Agree? @Harish: Well, I have assumed BPSK in this simulation. Even if you are using BPSK, I believe you might be passing on the received hard decision bits to the Viterbi decoder. So the underlying path metrics computation should still hold good. Agree?

]]> By: Krishna Sankar http://www.dsplog.com/2009/01/04/viterbi/#comment-16680 Krishna Sankar Sun, 06 Dec 2009 23:42:16 +0000 http://www.dsplog.com/?p=379#comment-16680 @Hyunjin.Jang: Hope this post helps. Good luck. @Hyunjin.Jang: Hope this post helps. Good luck.

]]> By: Harish http://www.dsplog.com/2009/01/04/viterbi/#comment-16490 Harish Thu, 03 Dec 2009 22:05:15 +0000 http://www.dsplog.com/?p=379#comment-16490 Hi, In your code I see that the survivor path metric index you have calculated as minimum of the 2 paths. Some thing like this case I : says idx case II; you say it is idx+2. I don't understand this. What would it be if I am using 8PSK with 8 states ? I am not able to arrive at the idx thing for storing the path index. Could you please help me with that ? Thanks, Harish Hi,
In your code I see that the survivor path metric index you have calculated as minimum of the 2 paths. Some thing like this
case I : says idx
case II; you say it is idx+2.
I don’t understand this. What would it be if I am using 8PSK with 8 states ? I am not able to arrive at the idx thing for storing the path index. Could you please help me with that ?

Thanks,
Harish

]]> By: Hyunjin.Jang http://www.dsplog.com/2009/01/04/viterbi/#comment-16079 Hyunjin.Jang Thu, 26 Nov 2009 17:36:43 +0000 http://www.dsplog.com/?p=379#comment-16079 It's difficult to viterbi... Help me, mt graduation of thesis. Image(photo) processing/ Simulation to C++ It’s difficult to viterbi…
Help me, mt graduation of thesis.
Image(photo) processing/ Simulation to C++

]]> By: Neo Cambel http://www.dsplog.com/2009/01/04/viterbi/#comment-16022 Neo Cambel Wed, 25 Nov 2009 18:37:29 +0000 http://www.dsplog.com/?p=379#comment-16022 Excellent tutorial. Thanks a lot. BR, Neo Excellent tutorial. Thanks a lot.
BR,
Neo

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