Apparatus and method for determining positions of pilot...

Details Apparatus and method for determining positions of pilot... Apparatus and method for determining positions of pilot...

2011-01-25

2011-01-25

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

07876844

ABSTRACT:
Techniques for determining positions of pilot sub-carriers in a received OFDM symbol are described. Components of pilot sub-carriers from a theoretical OFDM symbol are extracted to form M theoretical pilot sequences according to M possible distributions in frequency domain of the pilot sub-carriers in the theoretical OFDM symbol. Components of pilot sub-carriers from the received OFDM symbol are also extracted to form K hypothetical pilot sequences according to K possible distributions in frequency domain of pilot sub-carriers in the received OFDM symbol. The correlations of every two adjacent elements of the theoretical pilot sequences are calculated to get M corresponding theoretical correlation sequences, and the correlations of every two adjacent elements of the hypothetical pilot sequence are also calculated to get K corresponding hypothetical correlation sequences. Sequence correlations between the hypothetical correlation sequences and the theoretical correlation sequences are then calculated. The positions of pilot sub-carriers in the received OFDM symbol can be determined from the one that has the maximum modulus value.

REFERENCES:
patent: 7760800 (2010-07-01), Bae et al.
patent: 7778619 (2010-08-01), Bultan et al.
patent: 2004/0114551 (2004-06-01), Gavillero Martin et al.
patent: 2005/0213679 (2005-09-01), Yamagata
patent: 2008/0013573 (2008-01-01), Guo et al.
patent: 2008/0075212 (2008-03-01), Chun et al.

Affiliated with

Also associated with

Rating

Apparatus and method for determining positions of pilot... 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 method for determining positions of pilot..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for determining positions of pilot... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2671005