OFDM system with per subcarrier phase rotation

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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Reexamination Certificate

active

07447268

ABSTRACT:
Subcarrier phase rotation is implemented in an OFDM transmitting apparatus to overcome problems such as, for example, non-frequency selective multipath fading. In at least one embodiment, subcarrier phase rotation is practiced in an OFDM system implementing multiple input multiple output (MIMO) techniques.

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“Translation of portion of Korean Notice of Preliminary Rejection”, 3 pgs. (Aug. 30, 2007).

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