OFDM transmitting and receiving apparatus
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United States of America Patent
Stats
-
Oct 9, 2007
Grant Date -
May 15, 2003
app pub date -
Sep 24, 2002
filing date -
Sep 28, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An OFDM transmitting and receiving apparatus where the receiving unit receives an OFDM signal. A computing unit in the receiving unit computes a value of a channel response characteristic of each transmission channel corresponding to subcarriers contained in the received OFDM signal, and obtains a computed value. A comparing unit compares the computed value with a predetermined threshold value, and computes a ratio of the number of the subcarriers including the value of the channel response characteristic higher than the predetermined threshold value, to the number of all the subcarriers, and obtaining a computed ratio. A setting unit sets a transmission condition based on at least the computed ratio. A transmitting unit transmits an OFDM signal based on the transmission condition set.
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