Adaptive frequency domain equalization in OFDM based...

Details Adaptive frequency domain equalization in OFDM based... Adaptive frequency domain equalization in OFDM based...

2011-06-28

2011-06-28

Payne, David C. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

Reexamination Certificate

active

07970070

ABSTRACT:
An apparatus, system, and method of performing adaptive frequency domain equalization in an Orthogonal Frequency Domain Multiplexing (OFDM) based communication system transmitting data information, wherein the method comprises receiving OFDM symbols comprising scattered pilots; obtaining channel estimates on every third bin of the scattered pilots in a frequency domain, wherein the channel estimates are obtained by performing an interpolation in a time domain across the received OFDM symbols; estimating an original channel based on the channel estimates, wherein the original channel in the time domain is estimated by applying a finite impulse response (FIR) low-pass filter in a frequency domain, wherein the FIR low-pass filter is adaptive according to a delay span of an original channel impulse response and is sufficiently wide to cover the delay span of the original channel impulse response; and dividing the received OFDM symbols by the channel estimate to obtain transmitted data information.

REFERENCES:
patent: 6320901 (2001-11-01), Arad et al.
patent: 2006/0109938 (2006-05-01), Challa et al.
patent: 2006/0203710 (2006-09-01), Mukkavilli et al.
patent: 2009/0135923 (2009-05-01), Arambepola et al.
patent: 2010/0002788 (2010-01-01), Wu et al.
patent: 2010/0166118 (2010-07-01), Mantravadi et al.

Affiliated with

Also associated with

Rating

Adaptive frequency domain equalization in OFDM based... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive frequency domain equalization in OFDM based..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive frequency domain equalization in OFDM based... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2697301