Processing data transmitted and received over a wireless link co

Details Processing data transmitted and received over a wireless link co Processing data transmitted and received over a wireless link co

1997-11-26

2000-07-11

Ngo, Ricky

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

370342, 370345, 370441, 370442, 370479, H04J 1100, H04J 1300, H04B 7216

Patent

active

06088326&

ABSTRACT:
The present invention provides a transmission controller and method for processing data items to be transmitted over a wireless link connecting a central terminal and a subscriber terminal of a wireless telecommunications system, a single frequency channel being employed for transmitting data items pertaining to a plurality of wireless links. The transmission controller comprises an orthogonal code generator for providing an orthogonal code from a set of `m` orthogonal codes used to create `m` orthogonal channels within the single frequency channel, and a first encoder for combining a data item to be transmitted on the single frequency channel with said orthogonal code from the orthogonal code generator, the orthogonal code determining the orthogonal channel over which the data item is transmitted, whereby data items pertaining to different wireless links may be transmitted simultaneously within different orthogonal channels of said single frequency channel. Further, the transmission controller comprises a TDM encoder arranged to apply time division multiplexing (TDM) techniques to the data item in order to insert the data item within a time slot of the orthogonal channel, whereby a plurality of data items relating to different wireless links may be transmitted within the same orthogonal channel during a predetermined frame period. The invention also provides a reception controller and method for processing data items received over a wireless link.

REFERENCES:
patent: 4688210 (1987-08-01), Eizenhoffer et al.
patent: 4799252 (1989-01-01), Eizenhoffer et al.
patent: 5373502 (1994-12-01), Turban
patent: 5592469 (1997-01-01), Szabo
patent: 6005854 (1999-12-01), Xu et al.

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