Method for receiving OFDM signal, and receiver

Details Method for receiving OFDM signal, and receiver Method for receiving OFDM signal, and receiver

2007-03-21

2010-11-16

Payne, David C (Department: 2611)

Pulse or digital communications

Receivers

Automatic frequency control

C375S260000, C375S340000, C370S203000, C370S206000, C370S208000, C370S210000

Reexamination Certificate

active

07835476

ABSTRACT:
A receiver of an OFDM signal includes a reception unit to receive an OFDM signal formed by a plurality of OFDM symbols respectively including data subcarriers to which data signals are allocated and pilot subcarriers to which cyclically shifted pilot signals are allocated in frequency domain, an estimator to estimate phase errors of the pilot signals to generate first estimated values related to an offset of the OFDM symbol corresponding to each two or more OFDM symbols in the OFDM signal, a weighting adder to perform weighting additions on the first estimated values to obtain one second estimated value related to the offset, a compensator to compensate the offset by using the second estimated value to obtain a compensated OFDM signal, and a decoder to decode the compensated OFDM signal to reproduce the data signals.

REFERENCES:
patent: 2004/0258171 (2004-12-01), Akita et al.
patent: 2005/0201268 (2005-09-01), Aoki et al.
patent: 2006/0209979 (2006-09-01), Sandell et al.
patent: 2007/0058736 (2007-03-01), Nguyen et al.
patent: 2010/0014504 (2010-01-01), Sun et al.
patent: 2004-312372 (2004-11-01), None
Sean Coffey, et al., “Joint Proposal: High throughput extension to the 802.11, Standard: PHY”, IEEE P802.11-05/1102r4, Wireless LANs, Jan. 13, 2006, pp. 1-82.

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