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Document Number
US Patent 7515563
Issued Date
April 7, 2009
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Abstract
Communications systems are disclosed having a transmitting apparatus for transmitting a signal to a receiving apparatus, the transmitting apparatus comprising transmitting means for transmitting a plurality of directional transmission beams to the receiving apparatus via different transmission paths, each transmission beam carrying a transmission signal. The transmitting apparatus may include coding means (58) for coding the transmission signals carried by the transmission beams, the coding means (58) being arranged to code the transmission signal carried by one transmission beam differently from the transmission signal carried by another transmission beam. The transmitting apparatus may receive a feedback signal (122) indicating the quality of the various transmission beams and transmit a data signal only in selected transmission beams. A time advance may be selectively applied to some of the transmission signals so that the transmission signals arrive at a receiving apparatus in time synchronism.
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Number of Claims:
7
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Owner
Fujitsu Limited (Kawasaki,JP)
Published
April 7, 2009
Application Number
11/848,932
Filed
August 31, 2007
US Classification
370/334   370/335 370/342 375/130
Int'l Classification
H04B   7/216   (20060101)  
Examiner
Attorney/Law Firm
Priority Data
Feb 01, 2001 [GB] 0102574.1
USPTO Field of Search
370/334   370/335   370/342  
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