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Robust wireless location over fading channels

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3 Author(s)
Yousef, N.R. ; Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA ; Sayed, A.H. ; Jalloul, L.M.A.

This paper develops an estimation algorithm for the time and amplitude of arrival of a known transmitted sequence over a single-path fading channel. The algorithm is optimized to enhance robustness to fast channel fading and low signal-to-noise ratio (SNR) conditions, which are common in wireless location applications. The paper also presents a noise and fading bias correction technique for amplitude of arrival estimation that improves the estimation accuracy significantly. The proposed algorithm is then applied to the case of code-division multiple-access (CDMA) wireless location finding for which the paper gives simulation results that demonstrate significant estimation accuracy improvement over known algorithms.

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Vehicular Technology, IEEE Transactions on  (Volume:52 ,  Issue: 1 )