Title :
Carrier frequency estimation for transmissions with antenna diversity
Author :
Kim, Young-Doo ; Lim, Jae Kun ; Suh, Chang-Ho ; Jeong, Eui-Rim ; Lee, Yong H.
Author_Institution :
Div. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
fDate :
6/24/1905 12:00:00 AM
Abstract :
This paper deals with carrier frequency estimation for transmissions with antenna diversity. Joint maximum likelihood estimates (MLE) of channel and frequency offset are derived and periodic space-time training sequences that can simplify the implementation of the ML frequency estimate, while minimizing the mean square error (MSE) of the estimate are designed. Statistical analysis indicates that the MLE is unbiased and almost achieves the Cramer-Rao bound (CRB). Simulation shows that MLE with optimal training sequences is preferable to one with arbitrary training sequences in mobile communications.
Keywords :
diversity reception; frequency estimation; least mean squares methods; maximum likelihood sequence estimation; mobile radio; statistical analysis; CRB; Cramer-Rao bound; MSE; antenna diversity transmissions; carrier frequency estimation; channel estimate; frequency offset; maximum likelihood estimates; minimum mean square error; mobile communications; optimal training sequences; periodic space-time training sequences; simulation; statistical analysis; unbiased MLE; AWGN; Baseband; Fading; Frequency estimation; Maximum likelihood estimation; Mean square error methods; Receiving antennas; Statistical analysis; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN :
0-7803-7484-3
DOI :
10.1109/VTC.2002.1002881
