Title :
Frequency synchronization for multi input multi output orthogonal frequency division multiplexing systems
Author :
Abdullah, Asim ; Khan, Shoab Ahmed
Author_Institution :
Dept. of Electr. Eng., Coll. of Electr. & Mech. Eng, Rawalpindi, Pakistan
Abstract :
This paper presents an extended solution for the carrier frequency synchronization problem of multi input multi output (MIMO) orthogonal frequency division multiplexing (OFDM). The frequency synchronization scheme proposed by Minn et al. for OFDM systems is extended to be applicable for MIMO OFDM systems. This sequel uses the same training symbol as by Minn et al., the symbol is spread by orthogonal codes at the transmitting antennas. The frequency offset is estimated in two stages using the received training symbols. Channel estimation is also included in the synchronization scheme. The frequency and channel estimation performance of the proposed method are evaluated through computer simulations.
Keywords :
MIMO communication; OFDM modulation; channel estimation; frequency estimation; orthogonal codes; MIMO system; OFDM system; carrier frequency synchronization; channel estimation; frequency estimation; multiinput multioutput system; orthogonal code; orthogonal frequency division multiplexing; Baseband; Channel estimation; Educational institutions; Frequency estimation; Frequency synchronization; MIMO; Mechanical engineering; OFDM; Timing; Transmitting antennas; MIMO; OFDM; component; frequency synchronization; training symbol;
Conference_Titel :
Internet, 2009. AH-ICI 2009. First Asian Himalayas International Conference on
Conference_Location :
Kathmandu
Print_ISBN :
978-1-4244-4569-1
Electronic_ISBN :
978-1-4244-4570-7
DOI :
10.1109/AHICI.2009.5340302
