Multiplex communications – Generalized orthogonal or special mathematical techniques
Reexamination Certificate
2011-03-15
2011-03-15
Ferris, Derrick W (Department: 2463)
Multiplex communications
Generalized orthogonal or special mathematical techniques
C370S338000
Reexamination Certificate
active
07907507
ABSTRACT:
A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.
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Higashida Nobuo
Nakao Seigo
Tanaka Yasuhiro
Brockman Angel
Ferris Derrick W
McDermott Will & Emery LLP
NTT Data Sanyo System Corporation
Sanyo Electric Co,. Ltd.
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