Stmicroelectronics S.r.l.

Telecom Italia S.p.a.

Lorena Simoni

Bruno Melis

Alfredo Ruscitto

Piero Castoldi

Stefano Valle

Giuseppe Avellone

Donato Ettorre

Hisashi Kobayashi

Luca Fanucci

Maurizio Graziano

Andrea Finotello

Andrea Concil

Riccardo Grasso

A method for the estimation of the transfer function of a transmission channel in a receiving system of UMTS type envisages the computation of a plurality of channel coefficients, included among known channel coefficients corresponding to pilot symbols, through the reiteration of an interpolation algorithm, capable of calculating an intermediate point (Z, f(Z)) between a first extreme and a second extreme of a determined interval, the first extreme being formed by at least two known points and the second extreme being formed by at least one known point, the intermediate point to be calculated having as abscissa (Z) the abscissa value of the mean point between the points defining the interval rounded off to the integer closest to the first extreme, and having as ordinate (F(Z)) the arithmetic average between the ordinate of the known point of the second extreme and the ordinate of a point, chosen between the two known points of the first extreme, having a distance from the intermediate point equal to the distance between the intermediate point and the known point of the second extreme.

Interpolation for use in channel estimation

A receiver for receiving digital signals exposed to intersymbol interference as well as multiple access interference the method including linearly detecting said signals by combating said intersymbol interference by equalizing said received digital signals as well as mitigating said multiple access interference by detecting said digital signals using sliding window detection.

Low complexity detection in digital receivers

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Patrica, Italy

Lorena Simoni