Comments on: Symbol Error Rate (SER) for 4-PAM http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/ Signal Processing for Communication Fri, 10 Feb 2012 01:03:15 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Krishna Sankar http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-98250 Krishna Sankar Thu, 26 Jan 2012 01:31:59 +0000 http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-98250 @dsp: Thanks much. Replies: 1) The name E_{16PAM} is a typo, though the value of 5 is the right one. Changed the variable to E_{4PAM}. Thanks for pointing this out. 2) Infact, the post did not try to get to the Bit Error Rate. It computes the symbol error rate (ser) vs symbol to noise ratio (Es/N0) plot. But you are right, Eb/N0 and Es/N0 is different for the 4PAM case... @dsp: Thanks much. Replies:
1) The name E_{16PAM} is a typo, though the value of 5 is the right one. Changed the variable to E_{4PAM}. Thanks for pointing this out.
2) Infact, the post did not try to get to the Bit Error Rate. It computes the symbol error rate (ser) vs symbol to noise ratio (Es/N0) plot. But you are right, Eb/N0 and Es/N0 is different for the 4PAM case…

]]> By: dsp http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-98173 dsp Wed, 25 Jan 2012 15:22:10 +0000 http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-98173 Hi, I went through the above bit error rate calculation for 4-PAM derivation. I have two questions: 1) why did you give the name of variable (E16PAM) that is used to calculate the average energy of the 4-PAM constellation? 2) in the above expression, it seems to me you are using energy Eb and Es are equal. But in case of 4-PAM two bits are mapped into 1 symbol, thus the energy of bit and symbol cannot be the same, right? Hi,

I went through the above bit error rate calculation for 4-PAM derivation. I have two questions:

1) why did you give the name of variable (E16PAM) that is used to calculate the average energy of the 4-PAM constellation?
2) in the above expression, it seems to me you are using energy Eb and Es are equal. But in case of 4-PAM two bits are mapped into 1 symbol, thus the energy of bit and symbol cannot be the same, right?

]]> By: Krishna Sankar http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-24240 Krishna Sankar Sun, 28 Mar 2010 09:19:49 +0000 http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-24240 @inamullah: Sorry, am not aware. However, did you checkout some of the functions in RF toolbox or Communications toolbox in Matlab? @inamullah: Sorry, am not aware. However, did you checkout some of the functions in RF toolbox or Communications toolbox in Matlab?

]]> By: Krishna Sankar http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-24224 Krishna Sankar Sun, 28 Mar 2010 08:51:56 +0000 http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-24224 @Hamad: Sorry, I have not tried that. @Hamad: Sorry, I have not tried that.

]]> By: Hamad http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-23834 Hamad Tue, 23 Mar 2010 00:45:36 +0000 http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-23834 Thank you for this hard work, but can you tell me what if instead of pulse amplitude modulation scheme we use a noise variance modulation scheme with variance [1,2,3,4] Thank you Thank you for this hard work, but can you tell me what if instead of pulse amplitude modulation scheme we use a noise variance modulation scheme with variance [1,2,3,4]
Thank you

]]> By: inamullah http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-23589 inamullah Thu, 18 Mar 2010 22:40:11 +0000 http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-23589 hi dear i m doing my dessertation bt i need simulation on link budget analysis through matlab i need command for that like RF tools ha rftool same like that i need command for link budget plz help me or send the link on my email thanks inamkhan_swati@yahoo.com regards Inamullah from united kingdom 00447765001348 hi
dear i m doing my dessertation bt i need simulation on link budget analysis through matlab i need command for that like RF tools ha rftool same like that i need command for link budget plz help me or send the link on my email thanks
inamkhan_swati@yahoo.com
regards
Inamullah from united kingdom 00447765001348

]]> By: Martin http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-16871 Martin Wed, 09 Dec 2009 18:22:57 +0000 http://www.dsplog.com/2007/10/07/symbol-error-rate-for-pam/#comment-16871 Oh thank you. I forgot the sqrt(No). What a mistake. Oh thank you. I forgot the sqrt(No). What a mistake.

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