Invention Grant
- Patent Title: Non-integer oversampled timing recovery for higher order quadrature modulation communication systems using in-phase samples
- Patent Title (中): 使用同相采样的高阶正交调制通信系统的非整数过采样定时恢复
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Application No.: US14524008Application Date: 2014-10-27
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Publication No.: US09350526B2Publication Date: 2016-05-24
- Inventor: Gerard Wohlrab
- Applicant: THE UNITED STATES OF AMERICA AS REPRESETNED BY THE SECRETARY OF THE AIR FORCE
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the Secretary of the Air Force
- Current Assignee: The United States of America as represented by the Secretary of the Air Force
- Current Assignee Address: US DC Washington
- Agent Joseph A. Mancini
- Main IPC: H04L7/00
- IPC: H04L7/00 ; H04L7/033 ; H04L27/34 ; H04L1/20 ; H03L7/08 ; H03L7/093 ; H03L7/091 ; H03L7/107

Abstract:
Apparatus and method for performing entirely digital timing recovery for high bandwidth radio frequency communications. The received digital data source can be sampled from any (minimum 2×) non-integer oversampled transmitted data. This method re-samples the data through interpolation and phase adjustment. The output phase error adjusts the receiver's Analog-to-digital Convertor sampling clock to improve synchronization with the transmitter's Digital-to-analog Convertor clock phase, thus improving transmitted symbol recovery.
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