Title :
Iterative frequency offset estimation in MIMO-OFDM systems
Author :
Ershadi, Elnaz ; Bakhshi, Hamidreza
Author_Institution :
Dept. of Electr. Eng., Islamic Azad Univ., Tehran, Iran
Abstract :
MIMO-OFDM is the promising technique in the future of wireless communications as it combines the properties of Multiple Input Multiple Output (MIMO) systems with the properties of Orthogonal Frequency Division Multiplexing (OFDM). However, its sensitivity to frequency offsets, usually resulting in inter-carrier interference (ICI), makes frequency synchronization necessary for data recovery in the receiver side. In this paper, a preamble-based frequency offset compensation method is proposed in which every single subcarrier is separately compensated for all the frequency offsets that are experienced while passing through the fading channel. Simulation results show that our proposed scheme is accurate in multipath fading channels and precisely recovers the data symbols.
Keywords :
MIMO communication; OFDM modulation; fading channels; frequency estimation; intercarrier interference; synchronisation; MIMO-OFDM systems; frequency synchronization; intercarrier interference; iterative frequency offset estimation; multipath fading channel; multiple input multiple output systems; orthogonal frequency division multiplexing; Estimation; Fading; Frequency estimation; MIMO; OFDM; Receivers; Transmitters; MIMO-OFDM; frequency offset compensation; inter carrier interferences; preamble;
Conference_Titel :
Computational Technologies in Electrical and Electronics Engineering (SIBIRCON), 2010 IEEE Region 8 International Conference on
Conference_Location :
Listvyanka
Print_ISBN :
978-1-4244-7625-1
DOI :
10.1109/SIBIRCON.2010.5555095
