p**y
发帖数: 10 | 1 There are two kinds of system.
For long code system, the code for each symbol is different,
i.e.,
different c(m,n) for s(n). IS-95 is a long code system.
For short code system, each user is assigned a spreading
code. So,
for the s(n) of the same user, the code is the same. Short
code
system is investigated a lot in research recently.
Is that enough? |
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