Title :
Performances of Detection Algorithms for MIMO-OFDM Systems with Frequency Offset
Author_Institution :
Sch. of Inf. Technol. & Electron. Eng., Zhejiang Univ. of Sci. & Technol., Hangzhou, China
Abstract :
A key problem of OFDM is its sensitivity to frequency offset between the transmitted and received carrier frequencies. This carrier frequency offset introduces inter-carrier interference (ICI) in the OFDM symbol, furthermore leads the performance of system to be worse. In this paper, performances of parallel interference cancellation (PIC) and the standard VBLAST algorithm for MIMO-OFDM system is analyzed and compared by computer simulation. The simulation result indicates that when the carrier frequency offset normalized is bigger than 0.2, the increasing of signal-to-noise ratio don´t improve the performance of system.
Keywords :
MIMO communication; OFDM modulation; intercarrier interference; interference suppression; parallel algorithms; radiofrequency interference; sensitivity analysis; signal detection; MIMO-OFDM system; carrier frequency offset sensitivity; detection algorithm; inter-carrier interference; parallel interference cancellation; signal-to-noise ratio; standard VBLAST algorithm; Detection algorithms; Frequency conversion; Frequency synchronization; Interference; MIMO; OFDM modulation; Receiving antennas; Transmitters; Transmitting antennas; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302094
