Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Reexamination Certificate
2007-05-31
2008-10-28
Phan, Dao L (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
C375S260000
Reexamination Certificate
active
07443341
ABSTRACT:
A plurality of antennas transmit multicarrier signals composed of a plurality of streams. An IF unit acquires, per carrier, a channel matrix having elements the number of which is determined by the number of a plurality of transmitting antennas and the number of a plurality of receiving antennas provided in a receiving apparatus. A baseband processing unit derives a common autocorrelation matrix for the channel matrix acquired per carrier. The baseband processing unit derives a steering matrix by eigenvalue-decomposing the derived common autocorrelation matrix. The baseband processing unit derives, per carrier, weight vectors for a plurality of streams in a manner such that an orthonormalization is performed respectively on matrices obtained by operating the derived steering matrix on the channel matrix per carrier.
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Nakao Seigo
Nishimoto Hiroshi
Nishimura Toshihiko
Ogawa Yasutaka
Ohgane Takeo
McDermott Will & Emery LLP
National University Corporation Hokkaido University
Phan Dao L
Sanyo Electric Co,. Ltd.
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