Communication apparatus, communication system, and...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

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C375S267000, C375S299000, C375S324000, C375S349000

Reexamination Certificate

active

07848439

ABSTRACT:
A communication apparatus capable of improving the spectrum usage rate of a system, especially, the spectrum usage rate in connection with both a fast fading and a channel estimation error as compared with the conventional sub-band adaptive method, while reducing the degree of the difficulty in achieving the adaptation, and further reducing the feedback overhead. In this apparatus, a sub-band group AMC parameter selecting part (318) selects an AMC parameter of each sub-band. An adaptive reception control part (503) must control an adaptive demodulating/decoding part (311), while controlling a parallel/serial converter (312) in a stage preceding the adaptive demodulation and decoding processes, and combining received symbols in the same sub-band group for demodulation and decoding.

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PCT International Search Report dated Feb. 14, 2006.
Sharath B. Reddy, et al., “An Efficient Blind Modulation Detection Algorithm for Adaptive OFDM Systems,” Vehicular Technology Conference, 2003, VTC 2003-Fall, 2003 IEEE 58th, Aug. 9, 2003, pp. 1895-1899.
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