Correlated spreading sequences for high rate non-coherent...

Details Correlated spreading sequences for high rate non-coherent... Correlated spreading sequences for high rate non-coherent...

2006-01-24

2006-01-24

Chin, Stephen (Department: 2634)

Pulse or digital communications

Spread spectrum

Direct sequence

C370S342000, C375S130000, C375S140000, C375S146000, C375S151000

Reexamination Certificate

active

06990138

ABSTRACT:
The invention relates notably to a method for modulating information symbols to be transmitted in a CDMA communication network by using a non-orthogonal modulation code comprising M spreading sequences (sm1≦m≦M), each comprising in N chips (sm,n1≦n≦N), the M spreading sequences having the same energy.According to the invention, the amplitude of the chips take a plurality of values the number M of spreading sequences is higher than the number of chips N per spreading sequence.

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