TY - GEN
T1 - A new synchronization algorithm for OFDM systems in multipath environment
AU - Wang, Liang
AU - Shan, Xiuming
AU - Ren, Yong
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2002
Y1 - 2002
N2 - Carrier frequency and symbol timing errors may greatly degrade the performance of the orthogonal frequency division multiplexing (OFDM) system, especially in multipath environment. We explore the cyclostationarity of OFDM signals, which only relies on second order statistics, to estimate the synchronization offset. First, a coarse carrier frequency offset estimator for multipath environment is developed using the second order statistics of the received OFDM signal. It has a wide capture range though not accurate. Second, we introduce a new synchronization algorithm based on cyclostationarity and matched filter theories, which can get the maximal estimation SNR in multipath environment. Both estimators utilize channel state information to achieve better estimation performance and are non-pilot aided. They can be combined to form a whole OFDM synchronizer in multipath environment. Finally, simulations confirm the performance of the estimation algorithm.
AB - Carrier frequency and symbol timing errors may greatly degrade the performance of the orthogonal frequency division multiplexing (OFDM) system, especially in multipath environment. We explore the cyclostationarity of OFDM signals, which only relies on second order statistics, to estimate the synchronization offset. First, a coarse carrier frequency offset estimator for multipath environment is developed using the second order statistics of the received OFDM signal. It has a wide capture range though not accurate. Second, we introduce a new synchronization algorithm based on cyclostationarity and matched filter theories, which can get the maximal estimation SNR in multipath environment. Both estimators utilize channel state information to achieve better estimation performance and are non-pilot aided. They can be combined to form a whole OFDM synchronizer in multipath environment. Finally, simulations confirm the performance of the estimation algorithm.
KW - cyctostationarity
KW - multipath channel
KW - orthogonal frequency division multiplexing (OFDM)
KW - synchronization
UR - https://www.scopus.com/pages/publications/84961762805
U2 - 10.1109/ICCS.2002.1182476
DO - 10.1109/ICCS.2002.1182476
M3 - Conference contribution
AN - SCOPUS:84961762805
T3 - 8th International Conference on Communication Systems, ICCS 2002 - Proceedings
SP - 255
EP - 259
BT - 8th International Conference on Communication Systems, ICCS 2002 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Communication Systems, ICCS 2002
Y2 - 25 November 2002 through 28 November 2002
ER -