Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 6, 2010
Patent Application Number
11515291
Date Filed
September 1, 2006
Patent Primary Examiner
Patent abstract
Each of a general chunk to which pilot signals are allocated at a general density, and a high-density chunk to which pilot signals are allocated at a higher density than the density of the general chunk, is transmitted in a frequency band common to OFDM transmitters. Each of the OFDM transmitters allocates the high-density chunk to any one of OFDM receivers, which notifies poor receiving quality.
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