Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2006-10-24
2006-10-24
Craver, Charles (Department: 2682)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S424000, C455S063400, C455S066100, C455S288000
Reexamination Certificate
active
07127274
ABSTRACT:
In wireless communications, a method and system for enhancing signal decoding capability in null areas uses dithering to break up or modify the null areas. The null areas form in overlapping regions of the beams of two antennas or in overlapping regions of a single signal that is subject to multipath. Dithering is used to spread the null areas over a wider region so that a WTRU in an overlap region will not statically remain within a null area.
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patent: 6154661 (2000-11-01), Goldburg
patent: 6463301 (2002-10-01), Bevan et al.
Norklit et al., “Jitter Diversity in Multipath Environments,” IEEE Vehicular Technology Conference, 45th, vol. 2, Jul. 25-28, 1995, pp. 853-857.
Zekavat et al., “Smart Antenna Spatial Sweeping for Combined Directionality and Transmit Diversity,” Journal of Communications and Networks: Special Issue in Adaptive Antennas for Wireless Communications, vol. 2, No. 4, Dec. 2000, pp. 325-330.
Craver Charles
InterDigital Ttechnology Corporation
Volpe and Koenig P.C.
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