Radio transmitting apparatus, radio receiving apparatus and...

Details Radio transmitting apparatus, radio receiving apparatus and... Radio transmitting apparatus, radio receiving apparatus and...

2003-04-15

2008-05-13

Phu, Phuong (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S146000, C375S229000, C375S350000, C370S342000, C370S441000, C370S329000

Reexamination Certificate

active

07372909

ABSTRACT:
By assigning a plurality of subcarriers31to a data channel33and assigning fewer subcarriers32than the plurality of subcarriers31to a control channel34,and in addition locating the control channel34at the center frequency fc of a frequency band used to transmit the data channel33,on the radio receiving apparatus side, the frequencies of a local signal by which the received signal is multiplied share the same value, thereby speeding up the switching between the control channel and the data channel.

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PCT International Search Report dated Jun. 3, 2003.
Japanese Office Action dated May 10, 2005 with English translation.

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