Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2002.07c
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- Pages.1948-1951
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- 2002
Chip Timing Recovery Algorithm Robust to Frequency Offset and Time Variant Fading
- Kang, Hyung-Wook (Department of Electronics and Computer Engineering, SungKyunKwan University) ;
- Lee, Young-Yong (Department of Electronics and Computer Engineering, SungKyunKwan University) ;
- Park, Hyung-Jin (Department of Electronics and Computer Engineering, SungKyunKwan University)
- Published : 2002.07.01
Abstract
In this paper, we propose a chip timing recovery algorithm that is robust to frequency offset and time variant fading environments for DS/CDMA. The proposed structure is a modified non-coherent Delay Locked Loop (DLL) that employs a decimator. Analytical expression for the proposed non-coherent DLL S-curve and steady-state timing jitter is derived and confirmed by computer simulation. The results show that the proposed structure can reduce a steady-state timing jitter of the regenerated spreading code replica to frequency offset and time-variant fading in mobile radio channel, especially in very low SNR.
Keywords