Design and Implementation of Robust Time/Frequency Offset Tracking Algorithm for MIMO-OFDM Receivers

In this paper, the robust time and frequency offset tracking algorithms and architecture for high throughput wireless local area network (WLAN) systems are presented. The designed architecture has feedback and feed forward compensation loop with well defined loop filter coefficients obtained by vari...

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Bibliographic Details
Published in2006 IEEE 63rd Vehicular Technology Conference Vol. 3; pp. 1191 - 1195
Main Authors Il-Gu Lee, Heejung Yu, Eunyoung Choi, Jungbo Son, Sok-Kyu Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 2006
Subjects
Algorithm design and analysis
Feedback loop
Feeds
Filters
Frequency
Phase estimation
Robustness
Throughput
Timing
Wireless LAN
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Summary:In this paper, the robust time and frequency offset tracking algorithms and architecture for high throughput wireless local area network (WLAN) systems are presented. The designed architecture has feedback and feed forward compensation loop with well defined loop filter coefficients obtained by various experiments for practical implementation. Considered functional blocks include residual CFO estimator, carrier phase estimator, and timing error estimator. In addition to the algorithm descriptions of these blocks, the implementation method is presented, as they are modeled in the floating/cycle and bit true fixed point C model. These C models have been used as a reference for RTL coding and its verification. The design has been implemented successfully on an FPGA device. The proposed tracking method produces results very close to that of the offset-free system
ISBN:9780780393912
0780393910
ISSN:1550-2252
DOI:10.1109/VETECS.2006.1683023