1.0 Definition and Generation
Length of PN Sequences
In general, it can be demonstrated that the Maximum
Length of a PN Sequence generated by an N-stage Linear
Shift Register is:
L=2N-1
Where N is the number of stages of the Linear Shift
Register.
Note that only suitable Tap Combinations will yield
a Maximum Length sequence. in other words, a given
Tap Combination or arrangement does not necessarily
produce a Maximum Length Sequence.
Also note that the Linear Shift Register should not
be seeded with an all zeros state: The Modulo-2 of
two zeros yields another zero. This would result in
a permanent state of zeros in the Linear Shift Register.
