Multiple access telecommunication network
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United States of America Patent
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Dec 3, 1996
Grant Date -
N/A
app pub date -
Dec 20, 1994
filing date -
Dec 24, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a multiple access network, signals transmitted by a plurality of secondary stations to a primary station are to be distinguished by the primary station. One method for realizing this is by the use of Sub-Carrier Multiple Access (SCMA). According to the method of SCMA, a transmit signal is modulated on a subcarrier having its own frequency and then amplitude modulated on a main carrier in each secondary station. To reduce a mutual disturbance by the secondary stations in SCMA, according to the present invention, a transmit signal is converted into high-speed bursts of a transmit signal. As a result, fewer secondary stations on average are active, so that the mutual disturbance by the secondary stations will diminish.
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