A novel U-turn counting hangup detection algorithm for SDPSKmodulation |
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| Authors: | Jooyeoi Yang Hyoungsoo Lim Kyungwhoon Cheun |
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| Affiliation: | Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol.; |
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| Abstract: | A new hangup detection algorithm for symmetric differential phase-shift keying (SDPSK) modulation is proposed. Hangup is detected by observing phase transition patterns in the received SDPSK signal trajectory. The average pull-in times with and without the proposed hangup detector are compared. Simulation results show that the proposed algorithm significantly reduces the average pull-in time when the initial timing error is near the unstable null. We also show that the proposed algorithm is very robust against carrier frequency offsets |
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