Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Patent
1997-06-10
2000-08-01
Vu, Huy D.
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
370479, 375302, 375308, H04B 7216, H04B 1500, H04Q 728
Patent
active
060977140
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.
REFERENCES:
patent: 5038341 (1991-08-01), Berman et al.
patent: 5228055 (1993-07-01), Uchida et al.
patent: 5546381 (1996-08-01), Fukushima
patent: 5548613 (1996-08-01), Kaku et al.
patent: 5668795 (1997-09-01), Magill et al.
patent: 5737329 (1998-04-01), Horiguchi
patent: 5757853 (1998-05-01), Tsujimoto
patent: 5793798 (1998-08-01), Rudish et al.
patent: 5825806 (1998-10-01), Tuttle et al.
Asano Yoshihiko
Fukumasa Hidenobu
Hamada Hajime
Nagatani Kazuo
Oishi Yasuyuki
Fujitsu Limited
Phan Man
Vu Huy D.
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