Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2007-09-11
2007-09-11
Lamarre, Guy (Department: 2112)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S704000
Reexamination Certificate
active
10484951
ABSTRACT:
A data retransmission method, providing a practical ARQ (Automatic Repeat request) scheme in multicarrier communication such as OFDM. According to this method, all the carriers (i.e. subcarriers) are divided into a number of groups in advance, and these groups serve as the unit of data retransmission. An error detection code is attached on a per transmission symbol basis and transmission is performed, and, when mobile terminal apparatus100at the receiving end detects an error, subcarrier information obtainer130counts the number of carriers having received level below predetermined standard on a per group basis, and makes the group having the count value above a threshold level subject to retransmission request.
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Abraham Esaw
Lamarre Guy
Matsushita Electric - Industrial Co., Ltd.
Stevens Davis Miller & Mosher LLP
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