Robust wireless location over fading channels

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 lo...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2003-01, Vol.52 (1), p.117-126
Main Authors: Yousef, N.R., Sayed, A.H., Jalloul, L.M.A.
Format: Article
Language:English
Subjects:
Algorithms
Amplitude estimation
Amplitudes
Applied sciences
Arrivals
Channels
Exact sciences and technology
Fading
FCC
Multiaccess communication
Noise level
Parameter estimation
Position (location)
Robustness
Safety
Signal to noise ratio
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Wireless sensor networks
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Description
Summary: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.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2002.807153