Multirate Signal Processing for Communication Systems
Multirate Signal Processing for Communication Systems
A closed concept for synchronization and cell search in 3GPP LTE systems
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Joint time, frequency and sampling clock synchronization for OFDM-based systems
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Optimized architecture for computing Zadoff-Chu sequences with application to LTE
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
ML estimation of time and frequency offset in OFDM systems
IEEE Transactions on Signal Processing
A new joint algorithm of symbol timing recovery and sampling clock adjustment for OFDM systems
IEEE Transactions on Consumer Electronics
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The narrow subcarrier spacing and wide bandwidth arrangement in the LTE downlink produce a vulnerability to sample clock mismatch between the transmitting and receiving data converters. Without high precision sampling clock frequencies, a high level of inter-carrier interference (ICI) is introduced, yielding undesirable performance. In this article, a method to jointly estimate and correct sampling frequency mismatch is proposed. The proposed method uses information already known to the receiver, operates strictly in the time domain and does not require the aid of pilot symbols or other frequency domain information. The method allows clocks with lower precision to be used with minimal performance degradation. Results are presented using MATLAB simulation as well as an FPGA hardware implementation.