Code multiplexing wireless apparatus

Details Code multiplexing wireless apparatus Code multiplexing wireless apparatus

1997-06-10

1999-12-28

Horabik, Michael

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

370320, 370335, 370342, 375200, 375205, 375206, H04B 7216, H04B 1500

Patent

active

060090901

ABSTRACT:
A code multiplexing wireless apparatus for amplifying a code-multiplexed signal and then transmitting the amplified signal includes the following to reduce output back-off, improve the efficiency of a power amplifier and suppress broadening of the frequency spectrum: (1) a code-multiplexed signal generator for multiplying each item of transmission data by a spreading code sequence and combining spread-spectrum modulated signals to generate a code-multiplexed signal, (2) a signal-peak suppressing unit for holding the envelope of the code-multiplexed signal below a set level, and (3) a power amplifier for amplifying the code-multiplexed signal and transmitting the amplified code-multiplexed signal from an antenna.

REFERENCES:
patent: 4879726 (1989-11-01), Kobayashi et al.
patent: 5228055 (1993-07-01), Uchida et al.
patent: 5414728 (1995-05-01), Zehavi
patent: 5469468 (1995-11-01), Schilling
patent: 5621762 (1997-04-01), Miller et al.
patent: 5668795 (1997-09-01), Magill et al.

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