System and method for transmitting a multiple format...

Details System and method for transmitting a multiple format... System and method for transmitting a multiple format...

2011-01-11

2011-01-11

Santiago-Cordero, Marivelisse (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C375S139000, C375S145000, C375S147000, C375S150000, C714S757000

Reexamination Certificate

active

07869409

ABSTRACT:
A multi-mode transmitter (301) is adapted to modulate a data packet (200) communicated by a wireless communications signal. The data packet includes a packet header comprising a preamble (201) and a start of frame delimiter (202), and a data payload comprising a payload data length portion (203) and a payload portion (204). The packet header is modulated with a spread spectrum technique. When transmitting a data payload in one mode, the data payload is also modulated with the spread spectrum technique. When transmitting a data payload in another mode, the data payload is modulated with a non-spread spectrum technique.

REFERENCES:
patent: 5940435 (1999-08-01), Hendrickson
patent: 2003/0046629 (2003-03-01), Roh et al.
patent: 2005/0243894 (2005-11-01), Chen et al.
Spread Spectrum, introduction by ir. J. Meel, 1999.
cdma2000 System for Mobile Communications, Vanghi, Damnjanovic, and Vojcic, (c) 2004.
“The CDMA2000 System for Mobile Communications” by Vieri Vanghi, Aleksandar Damnjanovic, and Branamir Vojcic, (c) 2004 (“Vojcic”) p. 20. Reprinted from an e-book version, as pp. 1-11.

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