Code division multiple access system providing variable data rat

Details Code division multiple access system providing variable data rat Code division multiple access system providing variable data rat

1995-07-20

1999-01-05

Patel, Ajit

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

H04J 1300

Patent

active

058569715

ABSTRACT:
A multi-code code division multiple access system allows a user at a radio transmitter unit to dynamically change its source data bit rate. In response to a user input selecting one of said plurality of source bit rates, an adjustable coding means in the transmitter spreads and transmits the user's digital bit stream received at the selected bit rate to a channel bit rate which at least equals the highest bit rate of said plurality of source bit rates. The plurality of source bit rates includes a basic bit rate R and at least one bit rate which is a multiple M of the basic bit rate R, where M is an integer of at least 1. The user's input selects a particular user source bit rate by identifying a basic bit rate multiple M to a base station that is to receive the transmission.

REFERENCES:
patent: 4802189 (1989-01-01), Wedler
patent: 4882579 (1989-11-01), Siwiak
patent: 5166951 (1992-11-01), Schidling
patent: 5442625 (1995-08-01), Gitlin et al.
Wi-LAN, Inc., "Multicode Direct Sequence Spread Spectrum," Technical Bulletin #3, Oct. 1993. Cited in specification; technological background.
"Wireless Network At 20 Mbps," Newsbytes News Network, Sep. 29, 1993. Technological background.

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