Abstract
Detecting the order of multipath channel is the first step of a parametric channel estimator in wireless communication. It is critical to improve the performance of system. However, the methods to estimate the order of multipath are mainly based on Akaike information theoretic criterion (AIC) or minimum description length (MDL). They perform good at high SNR but bad at low SNR. In this paper, an improved constant false alarm rate algorithm based on forward-backward averaging (FB-CFAR) is proposed to detect the order of multipath channel. Simulation results in an OFDM system demonstrate that this algorithm can improve the probability of correct detection at low SNR effectively.
Original language | English |
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Pages (from-to) | 175-178 |
Number of pages | 4 |
Journal | Tien Tzu Hsueh Pao/Acta Electronica Sinica |
Volume | 35 |
Issue number | 1 |
State | Published - Jan 2007 |
Externally published | Yes |
Keywords
- FB-CFAR
- Order of multipath channel
- Parametric channel model
- Wireless communication