Invention Grant
- Patent Title: Method and apparatus for phase reference tracking of digital phase modulated signals in the receiver
- Patent Title (中): 接收机中数字相位调制信号相位参考跟踪的方法和装置
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Application No.: US12581607Application Date: 2009-10-19
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Publication No.: US08300736B2Publication Date: 2012-10-30
- Inventor: Pansop Kim , Jeng-Hong Chen , Hsin-Hsiang Liu
- Applicant: Pansop Kim , Jeng-Hong Chen , Hsin-Hsiang Liu
- Applicant Address: TW Hsinchu
- Assignee: ISSC Technologies Corp.
- Current Assignee: ISSC Technologies Corp.
- Current Assignee Address: TW Hsinchu
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Main IPC: H04L27/00
- IPC: H04L27/00
Abstract:
The present invention discloses a method and apparatus to provide, effectively and robustly, a phase reference in phase-domain for digital phase-modulated signals. Not only the first-order but also higher order PLLs are delineated for robust and fast tracking of frequency errors and time-varying frequency errors between the transmitter and the receiver. This invention can be applied to any phase-modulated signal such as PSK, DPSK, π/4-DPSK, and CPM. The decoders with this invention can achieve close to the performance of coherent detection.Reference[1] D. Divsalar and M. K. Simon, “Multiple-symbols differential detection of MPSK,” IEEE Trans. Commun., vol. 38, pp. 300-308, March 1990.[2] Specification of the Bluetooth System, 2.0+EDR, 4 Nov. 2004.
Public/Granted literature
- US20110090991A1 METHOD AND APPARATUS FOR PHASE REFERENCE TRACKING OF DIGITAL PHASE MODULATED SIGNALS IN THE RECEIVER Public/Granted day:2011-04-21
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