Telecommunications – Transmitter and receiver at separate stations – Distortion – noise – or other interference prevention,...
Reexamination Certificate
2005-10-11
2005-10-11
Chin, Vivian (Department: 2682)
Telecommunications
Transmitter and receiver at separate stations
Distortion, noise, or other interference prevention,...
C455S505000, C455S504000, C455S063100, C375S346000, C375S347000
Reexamination Certificate
active
06954618
ABSTRACT:
First estimations of the fading coefficients of a multi-path transmission channel are carried out in the sense of maximum likelihood. Sets of Wiener filter coefficients are stored according to predetermined speeds of movement of the mobile terminal and predetermined power levels of the signal. The real speed of the mobile terminal is estimated and the power of the signal for each path is measured. From this, a set of Wiener filter coefficients is derived with which the first estimations are filtered to obtain the final estimation of the fading coefficients.
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Baltersee et al., Performance Analysis of Phasor Estimation Algorithms for a FDD-UMTS Rake Receiver, 2000 IEEE Sixth International Symposium on Spread Spectrum Techniques and Applications, pp. 476-480, vol. 2, XP002192516.
Chaufray et al., Consistent Estimation of Rayleigh Fading Channel Second Order Statistics in the Context of the Wideband CDMA Mode of the UMTS, 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing, pp. 2189-2192, vol 4, XP002192517.
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Chin Vivian
Dao Minh D.
Jorgenson Lisa K.
STMicroelectronics N.V.
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