Abstract
The bit error rate (BER) of multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems with carrier frequency offset and channel estimation errors is analyzed in this paper. Intercarrier interference (ICI) and interantenna interference (IAI) due to the residual frequency offsets are analyzed, and the average signal-to-interference-and-noise ratio (SINR) is derived. The BER of equal gain combining (EGC) and maximal ratio combining (MRC) with MIMO-OFDM is also derived. The simulation results demonstrate the accuracy of the theoretical analysis.
Highlights
Spatial multiplexing multiple-input multiple-output (MIMO) technology significantly increases the wireless system capacity [1,2,3,4]
This paper provides a generalized bit error rate (BER) analysis of MIMO-orthogonal frequency-division multiplexing (OFDM), taking into consideration both the frequency offset and channel estimation errors
Let us first define Δλ(nnr),nt = λ(nnr),nt − λ(nnr),nt as the interference contributed by the nth subcarrier of the interfering transmit antennas, that is, the co-subcarrier inter-antenna-interference (CSIAI), and define Δξn(nr,)nt = ξn(nr,)nt − ξn(nr,)nt as the Intercarrier interference (ICI) contributed by the subcarriers other than the nth subcarrier of the interfering transmit antennas, that is, the intercarrier-interantenna interference (ICIAI)
Summary
Spatial multiplexing multiple-input multiple-output (MIMO) technology significantly increases the wireless system capacity [1,2,3,4]. A synchronization algorithm for MIMO-OFDM systems is proposed in [15], which considers an identical timing offset and frequency offset with respect to each transmit-receive antenna pair. The BER performance of MIMO systems, without considering the effect of both the frequency offset and channel estimation errors, is studied in [18, 19]. This paper provides a generalized BER analysis of MIMO-OFDM, taking into consideration both the frequency offset and channel estimation errors. Many channel estimation algorithms developed for either SISO or MIMO-OFDM systems, for example, [20,21,22], can be used to EURASIP Journal on Wireless Communications and Networking perform channel estimation The statistics of these RVs are used to derive the degradation in the receive SINR and the BER.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: EURASIP Journal on Wireless Communications and Networking
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
