Wireless transmission device, wireless reception device, and...

Pulse or digital communications – Spread spectrum

Reexamination Certificate

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Details

C375S141000, C375S146000, C375S260000, C375S267000, C375S295000, C375S299000

Reexamination Certificate

active

07852903

ABSTRACT:
A wireless transmission device enabled to improve an error rate performance at a receiver, by acquiring at least one of frequency diversity effect and a time diversity effect while keeping the interference resistance which is acquired by diffusion. In this transmission device, a modulation unit (101) modulates data to create a modulation symbol having in-phase components and quadrature components. An IQ individual spreading unit (102) arranges the diffusion chips, which are obtained by spreading the modulation symbol, of the in-phase components and the quadrature components, in areas extending in diffusion domains set individually for the in-phase components and the quadrature components. An IQ combining unit (103) combines the arranged spreading chips of the in-phase components and the quadrature components.

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