Method and receiver capable of increasing acquisition...

Details Method and receiver capable of increasing acquisition... Method and receiver capable of increasing acquisition...

2006-05-22

2009-12-08

Tse, Young T. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S150000, C370S210000

Reexamination Certificate

active

07630449

ABSTRACT:
A method capable of increasing acquisition efficiency in a code division multiple access (CDMA) communication system includes receiving a first signal, generating a second signal by performing a Fourier transform operation for the first signal, determining a plurality of shift signals generated by shifting the second signal a first frequency each time, choosing a pseudo-random code from a plurality of pseudo-random codes and performing a Fourier transform operation for the chosen pseudo-random code, multiplying the plurality of shift signals with a result of performing the Fourier transform operation for the chosen pseudo-random code, and performing an inverse Fourier transform operation for the multiplication result, and determining a status of acquisition.

REFERENCES:
patent: 2001/0033606 (2001-10-01), Akopian et al.
patent: 2003/0161543 (2003-08-01), Tanaka
patent: 2003/0231704 (2003-12-01), Tanaka et al.
patent: 2004/0138811 (2004-07-01), Teranishi et al.
patent: 2005/0168382 (2005-08-01), Awata
patent: 2006/0071851 (2006-04-01), Graas et al.

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