Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-04-12
2005-04-12
Ghebretinsae, Temesghen (Department: 2637)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S347000, C375S148000, C455S323000, C455S334000, C455S562100, C370S342000, C370S335000, C342S383000, C342S380000
Reexamination Certificate
active
06879624
ABSTRACT:
A path detector detects multipath waves on a transmission line based on a plurality of despread signals corresponding to fixed directional beams. An adaptive beam forming section forms an adaptive beam combined signal for each path, using a weight generated by an adaptive algorithm and the despread signals. An adder combines the adaptive beam signal for all paths, and a data judging section judges data included in the combined signal.
REFERENCES:
patent: 6385181 (2002-05-01), Tsutsui et al.
patent: 6509872 (2003-01-01), Ishii et al.
patent: 6597678 (2003-07-01), Kuwahara et al.
patent: 2000-22612 (2000-01-01), None
patent: 2000-59278 (2000-02-01), None
patent: 2000-82982 (2000-03-01), None
“Experiments on path search performance of coherent RAKE receiver for W-CDMA mobile radio” Technical Report of IEICE, CS98-30, RCS98-30, pp. 41-48 05/98 (with partial English translation).
“Laboratory experiments on coherent rake receiver in broadband DS-CDMA mobile radio” Technical Report of IEICE, A.P99-132, RCS99-129, pp. 57-62 10/99 (with partial English translation).
“Experimental evaluation on coherent adaptive array antenna diversity for DS-CDMA reverse link” Technical Report of IEICE, RCS98-94, pp. 33-38 09/98 (with partial English translation).
Ghebretinsae Temesghen
Mitsubishi Denki & Kabushiki Kaisha
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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