Radio communication apparatus, method and program

Details Radio communication apparatus, method and program Radio communication apparatus, method and program

2004-08-24

2009-06-09

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Combined with diverse type radiant energy system

C342S020000, C370S329000, C455S509000

Reexamination Certificate

active

07545308

ABSTRACT:
An apparatus and method for operating with a first radio system and a second radio system. First and second information is stored in the apparatus. The first information indicates at least one first channel which is used by the first system if a signal of the first system is detectable, and the second information indicating at least one second which fails to be used by the first system. A controller controls the second system to switch from the second channel to a third channel if the detector detects that a signal received through the third communication channel fails to be used in the first system. The second system includes a plurality of radios. The apparatus includes a modulation/demodulation unit that modulates and demodulates signals from the plurality of the radio systems. The signal are compatible are orthogonal frequency division multiplexed and are spread.

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