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Frame synchronization confirmation technique using pilot pattern

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1 Author(s)
Young-Joon Song ; Advanced Telecomm. Research Lab., LG Information & Communications, Ltd., LG R&D Complex, 533 Hogye-dong, Dongan-gu, Anyang, 431-080 Kyongki, Korea

A new frame synchronization confirmation technique using a pilot pattern for both uplink and downlink channels is proposed for W-CDMA (Wideband Code Division Multiple Access) system. It is shown that by using this technique, we can cancel the side lobe for autocorrelation functions of the frame synchronization words of pilot pattern except at middle shift. All the frame synchronization words of the pilot pattern have the maximum out-of-phase autocorrelation value “4” with two peak values equal in magnitude and opposite in polarity at zero and middle shifts. Due to this side lobe cancellation effect, therefore, the autocorrelation function of the frame synchronization words becomes ideal for the frame synchronization confirmation since double maximum correlation values equal in magnitude and opposite polarity at zero and middle shifts can be achieved. This property can be used to double-check frame synchronization timing and thus, improve the frame synchronization confirmation performance.

Published in:

Journal of Communications and Networks  (Volume:2 ,  Issue: 1 )