Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-05-22
2007-05-22
Ha, Dac V. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S260000, C375S340000, C375S349000, C375S371000, C370S516000, C455S276100
Reexamination Certificate
active
10186475
ABSTRACT:
A method and apparatus are provided that allows a training and traffic signal to be compensated for phase errors without modifying a receiver. In one embodiment, the invention encompasses an external error correction circuit having a signal input to receive training and traffic channel signals from a receive chain, a signal processing circuit to compute phase corrections to at least one of the training and traffic channel signals, and a signal generator to supply a compensation signal to effect the computed correction.
REFERENCES:
patent: 6320853 (2001-11-01), Wong et al.
patent: 6683907 (2004-01-01), Ling
patent: 6853631 (2005-02-01), Nakamura et al.
patent: 10026077 (2001-12-01), None
patent: WO01/63776 (2001-08-01), None
Lindskog et al., “A Transmit Diversity Scheme for Channels with Intersymbol Interference”, ICC 2000, Jun. 2000, vol. 1, pp. 307-311.
Pedersen et al., “A Simple Downlink Antenna Array Algorithm Based on a Hybrid Scheme of Transmit Diversity and Conventional Beamforming”, 2001 IEEE, pp. 58-62.
ArrayComm LLC
Blakely , Sokoloff, Taylor & Zafman LLP
Ha Dac V.
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