Fast Symbol Timing Recovery in All Digital Receiver

doi:10.13190/jbupt.200605.107.172

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (5): 107-110.doi: 10.13190/jbupt.200605.107.172

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Fast Symbol Timing Recovery in All Digital Receiver

WANG Na1, SHAN Chao2, GUO Dao-sheng2, ZHANG Bang-ning2

1. Institute of Sciences, People’s Liberation Army University of Science and Technology, Nanjing 211101, China;
2. Institute of Communication Engineering, People’s Liberation Army University of Science and Technology, Nanjing 210007, China

Received:2005-07-20 Revised:1900-01-01 Online:2006-10-30 Published:2006-10-30
Contact: WANG Na

Abstract

Abstract:

The performance of squaring algorithm is restricted by observation interval. Furthermore, the influence becomes more complex when the frequency offset is considered. Due to above problems, the Kalman filter was introduced. Then influences of frequency offset and observation interval on symbol timing recovery system under this circumstance were studied. The design of configuration and parameter for the second-order Kalman filter was analyzed and discussed. Simulation results show that the estimation accuracy is observably improved by joining the second-order Kalman filter when the observation interval is short. Consequently, the contradiction between the calculating precision and speed is effectively solved. Comprehensively considering precision, processing speed and computation complexity, the second-order Kalman filter is better than the first-order. It is more suitable for an all-digital symbol timing recovery system.

Key words: squaring algorithm, observation interval, Kalman filtering, frequency offset

CLC Number:

TN911.72

WANG Na1, SHAN Chao2, GUO Dao-sheng2, ZHANG Bang-ning2. Fast Symbol Timing Recovery in All Digital Receiver[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2006, 29(5): 107-110.

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Fast Symbol Timing Recovery in All Digital Receiver

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