etalement spectre v4
etalement spectre v4
etalement spectre v4
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c) Codes à débit variableOrthogonal Variable Spreading Factor (OVSF)C 2(1)={1,1}C 4 (1)={1,1,1,1}C 4 (2)={1,1,-1,-1}C 8(1)={1,1,1,1,1,1,1,1}C 8(2)={1,1,1,1,-1,-1,-1,-1}C 1 (1)={1}C 4 (3)={1,-1,1,-1}C 2 (2)={1,-1}C 4 (4)={1,-1,-1,1}possibilité de gérer des débits variables47