Title :
An improved carrier frequency synchronization algorithm with spatial diversity in MIMO-OFDM system
Author :
Chi, Xiao ; Changchuan, Yin ; Hai, Huang ; Duan, Peng ; Yan, Ma
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Carrier frequency synchronization is important in MIMO-OFDM systems. Any carrier frequency offset will cause a loss of subcarrier orthogonality which results in ICI and hence performance degrades severely. In this paper, a preamble structure for MIMO-OFDM systems is proposed. Based on the structure, the carrier frequency synchronization algorithm in burst data transmission for MIMO-OFDM systems is improved. The paper investigates the value of the improved algorithm with transmit and receive diversities for carrier synchronization in MIMO-OFDM systems. The simulation results show that the carrier synchronization performance in MIMO-OFDM systems with the improved algorithm exploiting transmit and receive diversity is efficient and robust, especially in low signal-to-noise ratio condition.
Keywords :
MIMO systems; OFDM modulation; data communication; diversity reception; synchronisation; ICI; MIMO-OFDM system; burst data transmission; carrier frequency synchronization algorithm; carrier synchronization performance; signal-to-noise ratio condition; spatial diversity; subcarrier orthogonality; Degradation; Educational technology; Frequency diversity; Frequency estimation; Frequency synchronization; MIMO; OFDM; Receiving antennas; Transmitting antennas; Wireless communication; CFO; MIMO-OFDM; MSE; carrier frequency synchronization; diversity;
Conference_Titel :
Broadband Network & Multimedia Technology, 2009. IC-BNMT '09. 2nd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4590-5
Electronic_ISBN :
978-1-4244-4591-2
DOI :
10.1109/ICBNMT.2009.5347843
