Title :
A frequency estimation scheme for a two-signal environment
Author :
Moretti, Marco ; Nostrato, Elena ; Piagueri, S. ; Janssen, Gerard J M
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
We present a frequency estimation scheme designed for the dual-signal receiver but valid for any system which allows the transmission of two simultaneous co-channel signals. The main strength of the proposed scheme is the combination of a training sequence and an asymmetric bootstrapping structure which results in almost complete suppression of the degrading effect of the co-channel interference on frequency estimation. The estimation performance is evaluated without noise where the main impairment is given by the interference and in the presence of noise by comparing the variance of the estimation error with the modified Cramer-Rao bound. The obtained results are comparable with the results for the interference-free case
Keywords :
cochannel interference; feedforward; frequency estimation; interference suppression; land mobile radio; noise; radio receivers; TDMA multi-user receiver; asymmetric bootstrapping structure; co-channel interference suppression; co-channel signals transmission; dual-signal receiver; estimation error variance; estimation performance; feedforward data-aided frequency recovery; frequency estimation; interference-free case; mobile communication system; modified Cramer-Rao bound; noise; training sequence; two-signal environment; Amplitude estimation; Degradation; Delay estimation; Estimation error; Frequency estimation; Interchannel interference; Phase estimation; Signal design; Timing; Traffic control;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.801707
