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Detail
Registered METHOD FOR ADJUSTING FET WINDOW POSITIONING IN MB-OFDM UWB SYSTEM
- Inventors
- Cheol-Ho Shin, Sangsung Choi, Cho Sang In, Kang Kyu-Min, Park Kwang Roh, Choi Sung Woo
- Application No.
- 11635272 (2006.12.07)
- Publication No.
- 20070133392 (2007.06.14)
- Registration No.
- 7729238 (2010.06.01)
- Country
- UNITED STATES
- Project Code
- 05MH1700, The Development of UWB Technology and Wireless 1394 SoC, Sangsung Choi
- 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.
- KSP Keywords
- Clock offset, Fast Fourier, Fourier transform(FT), Frequency Hopping, Frequency division, MB-OFDM, MB-OFDM UWB, Mac layer, Media access, Physical Layer, Sampling clock, UWB system, Ultra wide band(UWB), access control, data information, division multiplexing, fast Fourier transform(FFT), fast fourier transform (fft), media access control(MAC), multi-band, orthogonal frequency division multIPlexing(OFDM)