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학술대회 Packet Detection Scheme using Cross Correlation and Complex Multiplication in MB-OFDM UWB System
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김병학, 신철호, 최상성
International Conference on Information, Communications and Signal Processing (ICICS) 2007, pp.1-5
07MH1700, 초고속 멀티미디어 전송 UWB 솔루션 개발, 최상성
In this paper, we introduce a low power consumption packet detection scheme based on cross correlation and complex multiplication for MB-OFDM UWB system. The proposed scheme compares received signal power and calculated value explained later. The received signal is filtered by a correlator and then output of the correlator is multiplied with delayed output of the correlator and then we get the calculated value which is absolute value of output of complex multiplier. Filter tap coefficient of the correlator is given as sign value of known preamble. This scheme improves packet detection performance in multi-path fading channel model for MB-OFDM UWB system. Through the simulation for 4 block-fading channels, we describe that the proposed scheme can shrink degradation of packet detection performance due to any sampling timing offset and the fading channel model environment for MB-OFDM UWB system. ©2007 IEEE.
KSP 제안 키워드
Absolute value, Block fading channels, Complex Multiplication, Complex Multiplier, Cross-Correlation, Detection scheme, Fading Channel Model, MB-OFDM UWB, Model environment, Multi-path, UWB system