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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, Fast Fourier Transform(FFI), Fourier Transform, Frequency division, Frequency division multiplexing, MB-OFDM, MB-OFDM UWB, Mac layer, Media access, Orthogonal Frequency-Division Multiplexing(OFDM), Physical Layer, Sampling clock, UWB system, Ultra wide band(UWB), access control, data information, division multiplexing, fast fourier transform (fft), frequency hopping(FH), media access control(MAC), multi-band