symbol rate
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how to calculate symbol rate in MATLAB, if we are given a binary data of 1Kbits/second.
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Walter Roberson
2012-1-9
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If the number of bits per symbol is constant, then I already showed you the formula. You deleted my answer, however -- why did you do that?
1000 bits per second, divided by (N bits per symbol) gives how many symbols per second?
If different symbols have different numbers of bits, then you can only speak about the average number of symbols per second. You would either have to have a measured average, or you would have to have a known probability distribution for each symbol. Multiply the number of bits for any one symbol by its probability, sum over all the symbols to get the statistical average bits per symbol, and then proceed as per the above outline.
4 个评论
pinna Afff
2012-1-9
Walter Roberson
2012-1-11
No, 1000/2 would be the symbol rate. You have not provided enough information to calculate the symbol duration (a bit _rate_ of 1000 per second allows you to calculate the _maximum_ bit duration, but does not give enough information to calculate the actual bit duration.)
pinna Afff
2012-1-11
Walter Roberson
2012-1-11
The question cannot be answered knowing only the bit rate.
Suppose you were to throw one ball every minute. Does that tell us that the ball will be in the air for a full minute? No: it just tells us that you are only throwing one ball every minute. The duration required to receive (say) 3 balls would not be 3 minutes: it would be 2 minutes plus the time-in-flight for one ball... which is something that could vary from nanoseconds up to years (e.g., in space.)
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Honglei Chen
2012-1-9
0 个投票
You need to know how many bits form one symbol.
1 个评论
Walter Roberson
2012-1-9
Only if the number of bits per symbol is fixed.
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2012-1-9
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