Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2007-04-03
2007-04-03
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S346000, C375S232000, C714S792000
Reexamination Certificate
active
10329864
ABSTRACT:
An approach for decoding a substantially orthogonal code, such as a CCK code, based on its trellis diagram is provided. Compared to the conventional decoder based on codeword correlation, the unconventional decoder here has the advantage that it can work together with a decision feedback equalizer without suffering from the error propagation effect of the equalizer. In other words, the unconventional decoder makes joint decision feedback equalizer and decoder workable, which in turn enables reliable transmission of a signal encoded by a substantially orthogonal code over a multi-path channel.
REFERENCES:
patent: 4631735 (1986-12-01), Qureshi
patent: 6151370 (2000-11-01), Wei
patent: 6177951 (2001-01-01), Ghosh
patent: 6233273 (2001-05-01), Webster et al.
patent: 6304618 (2001-10-01), Hafeez et al.
patent: 6603801 (2003-08-01), Andren et al.
patent: 7017104 (2006-03-01), Chen et al.
patent: 2002/0037059 (2002-03-01), Heegard et al.
patent: 2003/0123585 (2003-07-01), Yen
patent: 2003/0152176 (2003-08-01), Ghosh
Robert L. Frank, “Polyphase Complementary Codes,” IEEE Trans. On Information Theory, pp. 641-647, Nov. 1980.
IEEE Standard 802.11b, “Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Higher-Speed Physical Layer Extension in the 2.4 GHz Band,” Sep. 1999.
Richard van Nee, et al., “New High-Rate Wireless LAN Standards,” IEEE Communications Magazine, pp. 82-88, Dec. 1999.
Intersil, “Complementary Code Keying Made Simple,” Application Note AN9850.2, Nov. 2001.
Hwang Wen-Yih
Jauh Yuh-Ren
Wang Bor-Chin
Wei Lee-Fang
Bocure Tesfaldet
Panwalkar Vineeta
Rosenberg , Klein & Lee
Zydas Technology Corporation
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