Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-05-03
2005-05-03
Ghebretinsae, Temesghen (Department: 2637)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S148000, C370S342000, C370S335000
Reexamination Certificate
active
06888877
ABSTRACT:
CDMA Receiver. According to one embodiment, a CDMA receiver is provided for receiving a CDMA signal in a multi-subscriber environment. The multi-subscriber environment can include a receiving device for receiving the CDMA signal. Further, the environment can include a Rake receiving circuit for detection of signal components of the CDMA signal which are transmitted via the various signal paths. The environment can also include a channel estimation circuit for estimating channel coefficients of a transmission channel coefficient h of a transmission channel H by means of a predetermined reference data sequence contained in the received CDMA signal. A weighting coefficient calculation device can calculate weighting coefficients for the various signal components of the CDMA signal. Further, the environment can include a weighting circuit for weighting the signal components with the calculaed weighting coefficients. A combiner can combine the weighted signal components to form an estimated received data signal.
REFERENCES:
patent: 5671221 (1997-09-01), Yang
patent: 5812542 (1998-09-01), Bruckert et al.
patent: 6757272 (2004-06-01), Abeta et al.
patent: 196 15 257 (1996-10-01), None
patent: 197 36 624 (1999-01-01), None
DSP Division, “24-Bit Digital Signal Processor User's Manual,” Motorola, Incorporated (Austin, TX), p. 3-1-3-7, (1996).
Doetsch Markus
Jung Peter
Kella Tideya
Plechinger Joerg
Schmidt Peter
Ghebretinsae Temesghen
Infineon - Technologies AG
Jenkins & Wilson & Taylor, P.A.
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