Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2005-12-16
2009-11-17
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S146000, C375S260000, C375S299000, C375S316000, C375S355000, C370S208000, C370S210000, C370S342000
Reexamination Certificate
active
07620115
ABSTRACT:
A space code block coding and spreading apparatus for transmission diversity, a Code Division Multiple Access (CDMA) diversity transmitter using it, and a CDMA mobile station receiver for receiving a transmission diversity signal, which are capable of improving the performance of system in wireless channel environments by allowing a transmission diversity to be made within one symbol interval in a CDMA communication system. The apparatus includes an encoder for generating a predetermined number of different transmission data with respect to a plurality of modulation symbols inputted during one modulation symbol interval, an orthogonal code generator for producing orthogonal codes, a spreader for spreading each of the transmission data generated from the encoder using the orthogonal codes generated from the orthogonal code generator, and a combining unit for combining the transmission data spread at the spreader to provide combined data for each transmission antenna path.
REFERENCES:
patent: 6185258 (2001-02-01), Alamouti et al.
patent: 7477703 (2009-01-01), Hottinen et al.
patent: 7545875 (2009-06-01), Zhang et al.
patent: 2005/0141414 (2005-06-01), Cheun et al.
patent: 2005/0174932 (2005-08-01), Deng et al.
patent: 2005/0185575 (2005-08-01), Hansen et al.
patent: 2007/0140377 (2007-06-01), Murakami et al.
patent: 2007/0248149 (2007-10-01), Shimomura et al.
patent: 2005-012531 (2005-01-01), None
patent: 1020010107770 (2001-12-01), None
patent: 1020020004878 (2002-01-01), None
patent: 1020030062791 (2003-07-01), None
Siavash M. Alamouti, “A Simple Transmit Diversity Technique for Wireless Communications,” IEEE Journal on Select Areas in Communications, vol. 16, No. 8, Oct. 1998, pp. 1451-1458.
Vahid Tarokh et al, “Space-Time Block Codes from Orthogonal Designs,” IEEE Transactions on Information Theory, vol. 45, No. 5, Jul. 1999, pp. 1456-1467.
Bang Seung-Chan
Jeong Chan-Bok
Kim Il-Gyu
Kim Young-Hoon
Nam Sang-Woo
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
Liu Shuwang
Singh Hirdepal
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