Spreading code structure for ultra wide band communications

Details Spreading code structure for ultra wide band communications Spreading code structure for ultra wide band communications

2008-06-17

2008-06-17

Odom, Curtis B. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S130000, C375S136000, C375S137000, C375S140000, C375S141000, C375S142000, C375S143000, C375S144000, C375S145000, C375S147000, C375S148000, C375S149000, C375S150000, C375S151000, C375S152000, C375S153000

Reexamination Certificate

active

07388899

ABSTRACT:
The ultra wide band communication system of the present invention includes a transmitter (station) and a receiver (station). The transmitter and the receiver employ spreading code comprised of code groups, which respectively comprise varied, auto-correlated codes. Consecutive information bits are spread and de-spread with differing code and the code groups are correlated with each other (e.g., orthogonal) so as to reduce channel impulse response estimation noise. At the receiver, subsequent channel estimates can be added or averaged with an initial channel estimate so as to reduce the channel impulse response estimation noise and thereby provide a relatively more accurate channel response.

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