Multiplex communications – Generalized orthogonal or special mathematical techniques – Fourier transform
Reexamination Certificate
2006-12-07
2010-06-01
Ngo, Ricky (Department: 2464)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Fourier transform
C370S479000, C375S316000
Reexamination Certificate
active
07729238
ABSTRACT:
Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.
REFERENCES:
patent: 6650617 (2003-11-01), Belotserkovsky et al.
patent: 2003/0053564 (2003-03-01), Kim et al.
patent: 2006/0176802 (2006-08-01), Ko et al.
patent: 2007/0127373 (2007-06-01), Ho et al.
patent: 2009/0080547 (2009-03-01), Naka et al.
patent: 1020010045947 (2001-06-01), None
patent: 1020010083190 (2001-08-01), None
Ecma International, “MAC-PHY Interface for ECMA-368”, 1st Edition / Dec. 2005.
Cheol-Ho Shin, et al; “A MB-OFDM UWB Receiver Design and Evaluation Using 4. Parallel Synchronization Architecture”, Paper of the Korea Institute of Electromagnetic Engineering & Science, pp. 1075-1085, Nov. 2005.
Notice of Korean Patent Grant dated Sep. 13, 2007 for the corresponding application KR10-2006-0033728.
Fernandez-Getino Garcia, M. Julia, “Tracking of Time Misalignments for OFDM Systems in Multipath Fading Channels”, Nov. 2002,IEEE Transactions on Consumer Electronicsvol. 48, No. 4.
Cho Sang-In
Choi Sang-Sung
Choi Sung-Woo
Kang Kyu-Min
Park Kwang-Roh
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
Ngo Ricky
Phung Luat
LandOfFree
Method for adjusting FFT window positioning in MB-OFDM UWB... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for adjusting FFT window positioning in MB-OFDM UWB..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for adjusting FFT window positioning in MB-OFDM UWB... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4182129