Apparatus and method for using multiple spreading codes for data

Details Apparatus and method for using multiple spreading codes for data Apparatus and method for using multiple spreading codes for data

1997-07-23

1999-08-17

Patel, Ajit

Multiplex communications

Communication over free space

Repeater

375200, H04B 7216

Patent

active

059403799

ABSTRACT:
Signal routing from origination nodes (210) to destination nodes (250) in a spread spectrum communication system (100) is provided using spread spectrum routing codes. Origination nodes (210) and destination nodes (250) are identified using specific codes. Signal routes from origination nodes (210) to destination nodes (250) are determined in terms of multi-level paths. Different codes are used to identify the different path levels. Data that is to be sent to a particular user located at a destination node is first spread using the destination code for that destination node. This spread spectrum signal is spread a second time using a first-level path code. In addition, the data can be spread a third time using a second-level path code. During the transmission of the spread data decoding processes are performed and the decoded data is routed based on the results of these decoding processes.

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