To provide a radio transmission method capable of flexibly coping with a frequency plan and a radio resource to be used for a local network.
A comparatively wide frequency band is divided into a plurality of carrier frequency ranges, i.e., main channels, by a frequency division multiplex access(FDMA), plural time slots, i.e., sub-channels, to be distributed in frame structure on respective carrier frequency levels are formed by a time division multiplex access(TDMA) and a cluster of a subscriber's station is allocated to one or more finite main channels. Each main channel signal is related to the cluster and divided into one or more sub-channels transmitted through the TDMA. Each transmitter of the subscriber's station transmits a detectable check signal and another subscriber's station can determine the existence of a transmitted signal existing in its own transmission range, based on the detection of the check signal by each receiver.
FAZEL KHALED
KLANK OTTO
DEUTSCHE FORSCH LUFT RAUMFAHRT
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