Spreading Codes: In order to spread the data sequence (Direct Sequence Spread Spectrum), the code sequence must be: Much faster than the data sequence. Exhibit some Randomness properties. Note that the data sequence has a slower speed (less transitions) than the Code sequence. By Multiplying the data sequence with the faster code sequence, the resulting product yields a sequence with more transitions than the original data. (Faster speed). With suitable random-like codes the resulting sequence will have the same speed as the code sequence. CODE: AN INTRODUCTION By Dr. Ernest Simo © 1999 DR. ERNEST SIMO - SPACE2000