Pulse or digital communications – Receivers
Reexamination Certificate
2003-03-01
2008-12-09
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Receivers
C375S340000, C375S141000, C375S147000
Reexamination Certificate
active
07463700
ABSTRACT:
A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A121) and a second transmit antenna (A122) at a transmitting station (14). Each of the plurality of slots comprises a first channel (DPCH) comprising a first set of pilot symbols and a second channel (PCCPCH) comprising a second set of pilot symbols. The user station further comprises circuitry (50) for measuring a first channel measurement (α1,n) for each given slot in the plurality of slots from the first transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (50) for measuring a second channel measurement (α2,n) for each given slot in the plurality of slots from the second transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (52) for measuring a phase difference value (φ2(n)) for each given slot in the plurality of slots in response to the first channel measurement and the second channel measurement for the given slot and in response to a ninety degree rotation of the given slot relative to a slot which was received by the despreading circuitry immediately preceding the given slot.
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patent: 6754473 (2004-06-01), Choi et al.
patent: 6839326 (2005-01-01), Pajukoski et al.
Onggosanusi et al., “Performance Analysis of Closed-loop Transmit Diversity in the Presence of Feedback Delay,” IEEE Transaction on Comm., vol. 49, No. 9, Sep. 2001, pp. 1618-1630.
“3rdGeneration Partnership Project (3GPP); Technical Specification Group (TSG) Radio Access Network (RAN) Working Group 1 (WG1); Physical Layer Procedures (FDD)”, 3GPP Ran 25.214 V1, 10.01 (Jun. 1999), TSGR1#5 (99)768***, pp. 1-29, See Chapter 8.
Dabak Anand G.
Onggosanusi Eko N.
Bocure Tesfaldet
Brady III Wade James
Neerings Ronald O.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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