- #1
iampaul
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I am using the book Electronic Communication Systems by Wayne Tomasi:
I had a problem with a certain part of the book:
The book gives the formula for the minimum nyquist bandwidth as:
" The minimum theoretical bandwidth necessary to propagate a signal is called the minimum Nyquist bandwidth or sometimes the minimum nyquist frequency. Thus, fb=2B, where fb is the bit rate in bps and B is the ideal nyquist bandwidth."
Then it says that:
"Using multilevel signaling, the nyquist formultion for channel capacity is fb=2Blog2M. This equation can be rearranged to solve for the minimum bandwidth necessary to pass M-ary digitally modulated carriers. B=fb/log2M" ?
What happened to the number 2 in 2Blog2M?? I thought it was just a typo but then it used this equation for the next discussions.
Please reply, thanks in advance!
I had a problem with a certain part of the book:
The book gives the formula for the minimum nyquist bandwidth as:
" The minimum theoretical bandwidth necessary to propagate a signal is called the minimum Nyquist bandwidth or sometimes the minimum nyquist frequency. Thus, fb=2B, where fb is the bit rate in bps and B is the ideal nyquist bandwidth."
Then it says that:
"Using multilevel signaling, the nyquist formultion for channel capacity is fb=2Blog2M. This equation can be rearranged to solve for the minimum bandwidth necessary to pass M-ary digitally modulated carriers. B=fb/log2M" ?
What happened to the number 2 in 2Blog2M?? I thought it was just a typo but then it used this equation for the next discussions.
Please reply, thanks in advance!