OFDM signal receiving apparatus

Details OFDM signal receiving apparatus OFDM signal receiving apparatus

2005-12-14

2008-12-16

Pham, Chi H (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

Reexamination Certificate

active

07466645

ABSTRACT:
Disclosed is an OFDM signal receiving apparatus for diversity reception, with a plurality of antennas, of an OFDM signal containing Y sub-carriers, where 2X−1<Y<2Xand X>1. The OFDM signal receiving apparatus includes a plurality of receiving systems, and a diversity processing unit connected to the receiving systems and fed with sequences of data on sub-carriers demodulated by the respective receiving systems. At least one of the receiving systems includes an FFT circuit for Fast Fourier transforming, in parallel, only a sequence of data on 2Zsub-carriers contained in the OFDM signal received with a corresponding antenna, where X>Z. The diversity processing unit performs a diversity process on sequences of data on sub-carriers, out of all the Y sub-carries, redundantly demodulated.

REFERENCES:
patent: 6603961 (2003-08-01), Kuroda
patent: 6628638 (2003-09-01), Sato et al.
patent: 2001-156738 (2001-06-01), None
patent: 3389178 (2003-01-01), None

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