Method of partial parallel interference cancellation

Pulse or digital communications – Spread spectrum – Direct sequence

Reexamination Certificate

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C333S150000, C333S151000, C333S152000, C333S153000, C333S154000, C333S155000, C333S193000, C333S194000, C333S195000, C333S196000, C342S150000, C342S151000, C342S152000, C342S153000, C342S154000, C342S155000, C342S193000, C342S194000, C342S195000, C342S196000, C370S319000, C370S320000, C370S321000, C370S330000, C370S335000, C370S342000, C370S345000, C370S347000

Reexamination Certificate

active

07352800

ABSTRACT:
A method of Partial Parallel Interference Cancellation (PPIC) is provided for recursively eliminating the Multiple Access Interference from a received signal. Such method is to use a recursion way to eliminate all the Multiple Access Interference (MAI) one by one from the received signal. Moreover, the present invention is to take the output of the pre-stage as the input of the present stage with the recursion method so that we can use only one operating circuit to obtain the function the MAI eliminating.

REFERENCES:
patent: 6548115 (2003-04-01), Gibson et al.
patent: 7068743 (2006-06-01), Suzuki
patent: 7099378 (2006-08-01), Dunyak et al.
patent: 7242708 (2007-07-01), Wang et al.
patent: 2004/0196892 (2004-10-01), Reznik
Neiyer Correal, “A DSP Based DS-CDMA Multiuser Receiver Employing Partial Parallel Interference Cancellation” IEEE Journal on Selected Areas in Communications, vol. 17, No. 4, Apr. 1999.
R. Michael Buerhere, “Analysis of DS-CDMA Parallel Interference Cancellation With Phase and Timing Errors” IEEE Journal on Selected Areas in Communications, vol. 14, No. 8, Oct. 1996.

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