SG Kim
Newbie level 1
Hello, I'm new to spread spectrum.
i'm trying to make a short PN code in C.
but i'm wondering how determine the characteristic polynomial in short PN codes.
short pn code's characteristic polynomials are known as below.
I: P(X)=X15 + X13 + X9 + X8 + X7 + X5 + 1
Q
so, the problem is WHO make that polynomials?
if i want to use 5 registers in LFSR,
how to make a characteristic polynomial?
my english is no good for reading.
i'm not good at english, but please help.
i'm trying to make a short PN code in C.
but i'm wondering how determine the characteristic polynomial in short PN codes.
short pn code's characteristic polynomials are known as below.
I: P(X)=X15 + X13 + X9 + X8 + X7 + X5 + 1
Q
so, the problem is WHO make that polynomials?
if i want to use 5 registers in LFSR,
how to make a characteristic polynomial?
my english is no good for reading.
i'm not good at english, but please help.