Code multiplexing transmitting apparatus

Details Code multiplexing transmitting apparatus Code multiplexing transmitting apparatus

2008-05-20

2008-05-20

Phan, M. (Department: 2619)

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

C370S215000, C370S335000, C370S479000

Reexamination Certificate

active

07376114

ABSTRACT:
A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.

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