Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2005-04-15
2009-02-03
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
C375S147000, C375S347000
Reexamination Certificate
active
07486727
ABSTRACT:
A communications circuit can operate in a first mode, such as a diversity mode including space time transmit diversity (STTD). In this mode, a number of equalizer filter portions connected to a number of post-equalizer processors are employed. When the diversity mode is not required, the extra equalizer filter portions would represent a waste of power consumption and/or chip space. A combining circuit and suitable control circuitry are provided to allow use of the additional equalizer filter portions to be made in other operating modes. Appropriate trade-offs can be made based on power consumption and performance.
REFERENCES:
patent: 3829777 (1974-08-01), Muratani et al.
patent: 5822100 (1998-10-01), Robinson et al.
patent: 2002/0018529 (2002-02-01), Dabak et al.
patent: 2003/0012318 (2003-01-01), Piirainen
Nicol et al., “Reconfigurable Communications Circuit Operable with Data Channel and Control Channel,” U.S. Appl. No. 11/166,042, filed Jun. 24, 2005.
Santoso et al., “A Chip level Decision Feedback Equalizer for CDMA Downlink Channel with the Alamouti Transmit Diversity Scheme,” The 14thIEEE International Symposium on Personal, Indoor and Mobile Radio Communication Proceedings, pp. 1322-1326 (2003).
Alamouti, S.M., “A Simple Transmit Diversity Technique for Wireless Communications,” IEEE Journal on Select Areas in Communications, vol. 16, No. 8, pp. 1451-1458, (Oct. 1998).
Lenardi, et al., “Comparison of Downlink Transmit Diversity Schemes for RAKE and SINR Maximizing Receivers,” IEEE ICC 2001 Conference Proceedings (2001).
Frank, C.D., “MMSE Reception of DS-CDMA with Open-Loop Transmit Diversity,” 3G Mobile Communication Technologies Conference Publication No. 477, pp. 156-160, (Mar. 2001).
Hooli, K., “Equalization in WCDMA Terminals,” Oulu University Press, Oulu (2003).
Anonymous, “3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Spreading and modulation (FDD), 3GPP TS 25.213, V5.5.0” (Dec. 2003).
Anonymous, “3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Physical channels and mapping of transport channels onto physical channels (FDD), 3GPP TS 25.211, V5.6.0” (Sep. 2004).
Nicol Christopher John
Prokop Tomasz T.
Yip Dominic Wing-Kin
Agere Systems Inc.
Liu Shuwang
Neff Michael R
Ryan & Mason & Lewis, LLP
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