PN Sequences By Dr. Ernest Simo 1.0 Definition and Generation Generation of (PN) Sequences Let us conduct the following experiment and draw some useful conclusions from its results: 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 #1 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: 0  0   0   1 1  1   0   0 2  1   1   0 3  1   1   1 4  0   1   1 5  1   0   1 6  0   1   0 7  0   0   1 The output sequence Ci(t)= 1 0 0 1 1 1 0 repeats itself after 7 shifts and is referred to as a PN Sequence or PN Code. CODE: AN INTRODUCTION By Dr. Ernest Simo © 1999 DR. ERNEST SIMO - SPACE2000