TY - GEN
T1 - Frequency error correction for OFDM based multicarrier systems and performance analysis
AU - Kandeepan, Sithamparanathan
AU - Reisenfeld, Sam
PY - 2005
Y1 - 2005
N2 - The presence of frequency offsets in the received signal for an orthogonal frequency division multiplexing (OFDM) based multicarrier system leads to inter carrier interferences (ICI). The degradation in the performance of an OFDM system is severe when there is frequency error, which is caused by the loss of orthogonality in the received carrier frequencies. Here, we look into the correction of frequency errors in the received OFDM signal, by means of a correlator based maximum likelihood (ML) frequency estimator. We analyse the system performance of the frequency corrected OFDM system and study the statistical nature of the frequency uncertainty in the receiver when the ML frequency estimator is used. The statistical distribution of the estimates made by the receiver is also determined.
AB - The presence of frequency offsets in the received signal for an orthogonal frequency division multiplexing (OFDM) based multicarrier system leads to inter carrier interferences (ICI). The degradation in the performance of an OFDM system is severe when there is frequency error, which is caused by the loss of orthogonality in the received carrier frequencies. Here, we look into the correction of frequency errors in the received OFDM signal, by means of a correlator based maximum likelihood (ML) frequency estimator. We analyse the system performance of the frequency corrected OFDM system and study the statistical nature of the frequency uncertainty in the receiver when the ML frequency estimator is used. The statistical distribution of the estimates made by the receiver is also determined.
KW - Frequency estimation
KW - Frequency estimation for OFDM
KW - Frequency synchronization
KW - Maximum likelihood frequency estimator
KW - OFDM
UR - http://www.scopus.com/inward/record.url?scp=34147131337&partnerID=8YFLogxK
M3 - Conference contribution
SN - 0780392833
SN - 9780780392830
T3 - 2005 Fifth International Conference on Information, Communications and Signal Processing
SP - 268
EP - 272
BT - 2005 Fifth International Conference on Information, Communications and Signal Processing
T2 - 2005 Fifth International Conference on Information, Communications and Signal Processing
Y2 - 6 December 2005 through 9 December 2005
ER -