Multiplex communications – Wide area network – Packet switching
Patent
1988-10-31
1990-06-12
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 93, H04J 1300
Patent
active
049339303
ABSTRACT:
In a data communication network the routing of data items from a group of eight source processors to a group of eight destination processors is controlled by code values assigned to each of the data values. The data items to be routed are bit-serial binary signals. These are encoded by the source processor using a pair of code values, one for each value of a bit of the binary signal. The eight source processors each encode eight bit-serial signals using respectively different code tables. The code tables are generated as different permutations of a basic code set. Each code table has the property that any additive combination of encoded values for all of the data items in a group produces a unique sum. The eight encoded values produced by each processor are summed to produce a set of analog channel symbols that are transmitted over an analog channel to a central switch fabric. In the switch fabric, the channel symbols are partially decoded to recover the encoded data values. The data values are regrouped according to their destination processors and summed to produce further sets of channel symbols which are transmitted to the destination processors. At the destination processors, the data values are completely decoded and assigned to separate input terminals of the destination processors based on their source processor.
REFERENCES:
patent: 3715508 (1973-02-01), Blasbalg
patent: 4281409 (1981-07-01), Schneider
patent: 4475186 (1984-10-01), Gutleber
patent: 4494228 (1985-01-01), Gutleber
patent: 4740959 (1988-04-01), Kosugi et al.
patent: 4779265 (1988-10-01), O'Connor et al.
Nishikado et al., "A New Encoding and Decoding Schemes for Multiple Acess Channels", The Transactions of the IECE of Japan, vol. E61, No. 4, Apr. 1978.
Schneider, "Optimum Detection of Code Division Multiplexed Signals", IEEE Transactions on Aerospace and Electronic Systems, vol. AES-15, No. 1, Jan. 1979.
Coding for T-User Multiple Access Channels, Chang et al., (pp. 684-691), IEEE Trans. on Information Theory, vol. IT25, No. 6, Nov. 1979.
Guerin Roch A.
Lien Yeong-chang
Hsu Alpus H.
International Business Machines - Corporation
Olms Douglas W.
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