Timing Synchronization Method for Continuous Phase Frequency Shift Keying Signal Based on Multi-symbol Detection

Tian LIU; Song MA; Tian YUAN; Shihai SHAO

doi:10.11999/JEIT180060

Volume 40 Issue 11

Oct. 2018

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Tian LIU, Song MA, Tian YUAN, Shihai SHAO. Timing Synchronization Method for Continuous Phase Frequency Shift Keying Signal Based on Multi-symbol Detection[J]. Journal of Electronics & Information Technology, 2018, 40(11): 2720-2727. doi: 10.11999/JEIT180060

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Tian LIU, Song MA, Tian YUAN, Shihai SHAO. Timing Synchronization Method for Continuous Phase Frequency Shift Keying Signal Based on Multi-symbol Detection[J]. Journal of Electronics & Information Technology, 2018, 40(11): 2720-2727. doi: 10.11999/JEIT180060

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Timing Synchronization Method for Continuous Phase Frequency Shift Keying Signal Based on Multi-symbol Detection

doi: 10.11999/JEIT180060

1.
The 10th Research Institute of China Electronics Technology Group Corporation (CETC), Chengdu 610036, China
2.
National Key Laboratory of Communication, University of Electronic Science and Technology of China, Chengdu 611731, China

Received Date: 2018-01-16
Rev Recd Date: 2018-06-20

Available Online: 2018-07-18

Publish Date: 2018-11-01

Abstract

Abstract

Continuous Phase Frequency Shift Keying (CPFSK) is widely adopted as a standard by the telemetry community. The Multi-Symbol Detection (MSD) technique can increase channel gain for the CPFSK telemetry system. Therefore, the timing synchronization method for CPFSK signal needs to adapt to the scenario with lower SNR. According to existing timing synchronization methods’ poor performance in low SNR, a novel timing synchronization method for CPFSK signal based on MSD is proposed, which is suitable to variable rate. The simulation results show that, when E_b/N₀ is 0 dB and symbol rate is 2 Mbps, the proposed method achieves 2 dB more channel gain than the single symbol likelihood decision method, and has similar performance to the early-late gate code synchronization method with reduced hardware resource by 60%. Finally, the validity of the numerical simulation and resource evaluation is verified by principle prototype realization.
- Timing synchronization,
- Continuous Phase Frequency Shift Keying (CPFSK),
- Multi-Symbol Detection (MSD),
- Variable-rate

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References(15)

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