An adapter apparatus wirelessly transmits a TMDS signal to an adapter apparatus using a first radio channel, wirelessly transmits a DDC downstream signal and a CEC downstream signal to an adapter apparatus using a second radio channel, and receives a radio signal including a DDC upstream signal and a CEC upstream signal from the adapter apparatus using the second radio channel. The adapter apparatus receives the TMDS signal using the first radio channel, receives the radio signal including the DDC downstream signal and the CEC downstream signal using the second radio channel, and wirelessly transmits the DDC upstream signal and the CEC upstream signal to the adapter apparatus using the second radio channel.

 
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< PHYSICAL HARQ INDICATOR CHANNEL (PHICH) RESOURCE ASSIGNMENT SIGNALING IN A WIRELESS COMMUNICATION ENVIRONMENT

> ANTENNA DEVICE , A PORTABLE RADIO COMMUNICATION DEVICE COMPRISING SUCH ANTENNA DEVICE, AND A BATTERY PACKAGE FOR A PORTABLE RADIO COMMUNICATION DEVICE

> HYPERBAND ANTENNA AND PORTABLE WIRELESS COMMUNICATION DEVICE USING THE SAME
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