Method and apparatus for mobile radio velocity estimation

Details Method and apparatus for mobile radio velocity estimation Method and apparatus for mobile radio velocity estimation

2006-10-10

2006-10-10

Anderson, Matthew D. (Department: 2618)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S522000, C455S238100

Reexamination Certificate

active

07120439

ABSTRACT:
A mobile radio velocity estimation system (100) includes an autocorrelation block (106) that determines the autocorrelation of a received signal (104) using one lag (102). A power determination block (108) determines the power of the received signal (104) and a divider block (114) divides the autocorrelation (110) by the power (112). Using a Bessel function lookup table (116) and a multiplication by λ/τ block (118), an estimate (120) for the mobile radio's velocity can be calculated. A method for estimating the velocity of a mobile radio (500) is also discussed.

REFERENCES:
patent: 6591168 (2003-07-01), Odinak et al.
patent: 2002/0172307 (2002-11-01), Sandberg
Mark D. Austin, Gordon L. Stuber, “Velocity adaptive handoff algorithms for microcellular systems”, IEEE transactions on vehicular technology, vol. 43, N, 3.
E. Karastergios, M.A.K. Sumanasena and B,G, Evans, “Mobile velocity estimator for Ricean fading channels”, Electronics letters, 5thDec. 2002, vol. 38. No. 25.
Jian-Yu Lu, Xiao-Liang Xu, Hehong Zou, James Greenleaf, Application of Bessel for Doppler Velocity Estimation:, IEEE transactions on ultrasonics, ferroelectrics, and frequency control, vol. 42, N.4, Jul. 1995.
R. Clarke “A Statistical theory of mobile radio reception”, Bell System Tech Journal vol. 47, pp. 957-1000, 1968.
Rappaport, Wireless Communications, Principles and Practice , 2ndEdition, ISBN o13-042232-0.

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