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A Frequency Offset Estimation Technique Based on CCK for a WLAN Receiver Design

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2 Author(s)
Heng-yuan Hsu ; Nat. Central Univ., Taoyuan ; Jia-chin Lin

This paper studies a frequency offset estimation and compensation technique taking advantage of complementary code keying (CCK) in a baseband architecture. The proposed technique can switch between coarse and fine frequency offset estimation subsystems in order to achieve lower estimation errors and lower bit-error rates (BERs). The architecture mainly exploits the specific characteristics of the CCK code set; thus it blindly extracts the frequency offset without any assistance from a training sequence. The proposed technique is very suitable to be employed in a CCK-based WLAN system for the purpose of increasing data transmission rate. Extensive computer simulations show that the proposed technique and its architecture realization exhibit superiority in overall system performance.

Published in:

IEEE Transactions on Consumer Electronics  (Volume:53 ,  Issue: 4 )