PN Sequences By Dr. Ernest Simo 1.0 Definition and Generation Generation of (PN) Sequences Let us conduct a second experiment similar to the first experiment with the exception of the Taps Connections: Seed stages 1, 2, and 3 of the Linear Shift Register with 0, 0, and 1 respectively. Note that 001 represents the least significant number. Connect Tap #2 and Tap #3 to the input of the Modulo-2 adder. Drive the Linear Shift Register with a clock. The resulting States of the Shift Register for various Time-shifts are: TIME-SHIFTS 0   0   0   1 1   1   0   0 2   0   1   0 3   1   0   1 4   1   1   0 5   1   1   1 6   0   1   1 7   0   0   1 The output sequence Cj(t)= 1 0 0 1 0 1 1 repeats itself after 7 shifts and is referred to as a PN Sequence or PN Code. PN Sequences By Dr. Ernest Simo © 1999 DR. ERNEST SIMO - SPACE2000

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