Apparatus, and associated method, for effectuating post-FFT...

Details Apparatus, and associated method, for effectuating post-FFT... Apparatus, and associated method, for effectuating post-FFT...

2007-12-11

2007-12-11

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

C375S260000, C375S354000, C455S063300, C370S491000, C370S503000

Reexamination Certificate

active

10396118

ABSTRACT:
In an orthogonal frequency division multiplexing (OFDM) system, a receiver of an OFDM signal via an air interface defines training symbols to be included in the frame structure of the air interface and a post-FFT receiver algorithm that can efficiently estimate a fractional frequency offset (e.g., a frequency offset less than a single intercarrier spacing). The algorithm may be modified to estimate a large frequency offset (e.g., of more than a single intercarrier spacing) using increased hardware complexity. The algorithm does not need a correlator block in its simplest implementation. The frequency detection itself features excellent performance in a very low SNR environment. However, if noise plus timing error is present, system parameters may be designed to substantially assure good performance in low SNR.

REFERENCES:
patent: 5732113 (1998-03-01), Schmidl et al.
patent: 6370188 (2002-04-01), Wu et al.
patent: 7009931 (2006-03-01), Ma et al.
patent: 2002/0065047 (2002-05-01), Moose
patent: 2002/0181509 (2002-12-01), Mody et al.
patent: 106705 (2000-12-01), None
patent: 2000-0041863 (2000-07-01), None
List of publications from Takahiko Saba.
Meng-Han Hsieh & Che-Ho Wei, IEEE 1999; A Low-Complexity Frame Synchronization and Frequency Offset Compensation Scheme for OFDM Systems over Fading Channels.

Affiliated with

Also associated with

Rating

Apparatus, and associated method, for effectuating post-FFT... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus, and associated method, for effectuating post-FFT..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus, and associated method, for effectuating post-FFT... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3897183