Apparatus and method for calculating and implementing a...

Details Apparatus and method for calculating and implementing a... Apparatus and method for calculating and implementing a...

2005-09-20

2005-09-20

Tse, Young T. (Department: 2637)

Pulse or digital communications

Spread spectrum

C375S140000, C708S250000, C708S252000

Reexamination Certificate

active

06947468

ABSTRACT:
An apparatus and method for calculating and implementing a Fibonacci mask for a code generator is disclosed herein. The first step receives a desired code offset from a reference code state in a Fibonacci field. Next, a field vector in a Galois field with the same code offset sought in the first field is calculated. In the next step, the first field vector is transformed into a second field vector, which is operable as a mask in the Galois LFSR. The transform step is accomplished by multiplying the Galois field vector by a linear N×N transformation matrix to obtain the Fibonacci field vector. And the N×N transformation matrix is obtained from iterated states of the Fibonacci LFSR.

REFERENCES:
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patent: 6038577 (2000-03-01), Burshtein
patent: 6141374 (2000-10-01), Burns
patent: 6141669 (2000-10-01), Carleton
patent: 6173009 (2001-01-01), Gu
patent: 6282230 (2001-08-01), Brown et al.
patent: 6295301 (2001-09-01), Asano

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