OFDM receiving apparatus and receiving method thereof

Details OFDM receiving apparatus and receiving method thereof OFDM receiving apparatus and receiving method thereof

2004-02-24

2008-10-14

Tse, Young T. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C370S208000, C370S210000

Reexamination Certificate

active

07436897

ABSTRACT:
An Orthogonal Frequency Division Multiplexing (OFDM) receiving apparatus having a sub-carrier selectively combining mode and an antenna selecting mode. The sub-carrier selectively combining mode is configured to selectively combine signals for each sub-carrier. The antenna selecting mode is configured to select a receiving antenna. The OFDM receiving apparatus operates in a proper operation mode based on a communication environment. As a result, in a poor communication environment, signals are selectively combined for each sub-carrier. However, in a relatively satisfactory communication environment, unnecessarily operation of an RF and IF circuit, an A/D converter, and a DDT connected to each receiving antenna may be avoided.

REFERENCES:
patent: 6249250 (2001-06-01), Namekata et al.
patent: 6512738 (2003-01-01), Namekata et al.
patent: 2002/0181421 (2002-12-01), Sano et al.
patent: 2003/0002471 (2003-01-01), Crawford et al.
patent: 2006/0166634 (2006-07-01), Ido
Yoichi Matsumoto et al., “OFDM Subchannel Space-Combining Transmission Diversity for TDMA-TDD Broadband Mobile Radio Communications Systems”, The Institute of Electronics, Information and Communication Engineers, pp. 129-136, 1998.

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