Method for modulating a bit string, modulator, radio...

Details Method for modulating a bit string, modulator, radio... Method for modulating a bit string, modulator, radio...

2006-02-24

2010-06-22

Vo, Don N (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

07742517

ABSTRACT:
A modulator includes a first input configured to input a first bit string; a first modulating device configured to modulate the inputted first bit string at a first bit rate; a second input configured to input a second bit string; a second modulating device configured to modulate the inputted second bit string at a second bit rate which is lower than the first bit rate; and an output configured to output a modulated signal including the modulated first bit string and the modulated second bit string.

REFERENCES:
patent: 2006/0104253 (2006-05-01), Douglas et al.
patent: 2007/0097851 (2007-05-01), Adachi
patent: 2009/0015344 (2009-01-01), Lampe et al.
patent: 2009/0124211 (2009-05-01), Itoh et al.
Adachi, F. et al., “Performance of Multicode DS-CDMA Using Frequency Domain Equalisation in Frequency Selective Fading Channel,” Electronics Letters, vol. 39, No. 2, 2 pages, (Jan. 23, 2003).
Garg et al., “Chip Interleaving for DS-CDMA with Frequency Domain Equalization in a Frequency Selective Rayleigh Fading Channel,” Technical Report of IEICE (2004), pp. 7-12.

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