Nec Corporation

Kyoichiro Masuda

Motoya Iwasaki

Kengo Oketani

A decoding device that performs decoding of data transmitted from each of a plurality of users comprises an iterative decoding section that repeats decoding of the data until no error is detected in a result of decoding, an error detection section that performs error detection on the decoding result each time decoding is performed, and a decoding order control section that estimates with respect to each of the plurality of users a decoding completion time, which is a time period required until no error is detected in the result of decoding of the data transmitted from the user, and that assigns priorities to the users in increasing order of the estimated decoding completion time. The iterative decoding section performs decoding of the data transmitted from the users in descending order of the priorities.

Decoding device and decoding order control method

A pattern detection circuit for performing pattern detection on input signals from a communication terminal, includes a frequency domain transformer that transforms input signals into frequency domain signals; a frequency extractor that extracts frequency components of the frequency domain signals; and a pattern detector that performs the pattern detection on the input signals based on cross-correlation values in frequency domain between the extracted frequency components and predetermined patterns.

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Tokyo, Japan

Kyoichiro Masuda