Multiple access telecommunication network

Details Multiple access telecommunication network Multiple access telecommunication network

1994-12-20

1996-12-03

Olms, Douglas W.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via frequency channels

370344, 370468, H04J 105

Patent

active

055815545

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.

REFERENCES:
patent: 4385377 (1983-05-01), Norris et al.
patent: 4999831 (1991-03-01), Grace
patent: 5411536 (1995-05-01), Armstrong
"A European Initiative Leading Towards a Practical Customer Access Link Link Using Fibre", D. E. A. Clarke, R. Mudhar and A. Purser. Jan. 1993 pp. 120-126.

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