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Techniques improving the transmission reliability in high-rate wireless LANs

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3 Author(s)
Mi-Jeong Kim ; Dept. of Inf. & Commun. Eng., Sejong Univ., Seoul, South Korea ; Joo-Hee Moon ; Hyoung-Kyu Song

This paper presents frame synchronization and two frequency synchronization techniques for high-rate wireless LANs (local area networks). Also, to improve the reliable communication under the multipath fading channel, we propose the wireless LAN system employing the space-time code. The proposed frame synchronization technique using the threshold checking scheme is directly based on the correlation method. We then describe a coarse frequency synchronization technique combining two conventional synchronization techniques to estimate an integral frequency-offset and a frequency synchronization technique employing interpolation method to estimate the integral and fractional frequency- offsets at the same time, respectively. Finally, by simulation, the performance of the proposed techniques is evaluated.

Published in:

IEEE Transactions on Consumer Electronics  (Volume:50 ,  Issue: 1 )