Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2004-06-07
2010-06-29
Ahn, Sam K (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
07746938
ABSTRACT:
In an OFDM transmitting apparatus, where m (where m is an integer of one or greater) adjacent subcarriers are adopted as a set, an orthogonal code generator generates orthogonal codes of each set in such a manner that the orthogonal codes will be orthogonal in the time direction in regard to m subcarriers of each set and orthogonal in the subcarrier direction in regard to m pilot symbols. An orthogonal code multiplier uses orthogonal codes of each set to multiply subcarrier components of the corresponding set, and an IFFT unit applies IFFT processing to the results of multiplication in each subcarrier.
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Hasegawa Tsuyoshi
Ito Akira
Ahn Sam K
Fujitsu Limited
Myers Wolin LLC
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