Invention Grant
- Patent Title: Measurement of baseband timing in a spread spectrum communications system
- Patent Title (中): 扩频通信系统中基带定时的测量
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Application No.: US11803823Application Date: 2007-05-16
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Publication No.: US08009723B2Publication Date: 2011-08-30
- Inventor: Nathan Hays
- Applicant: Nathan Hays
- Applicant Address: US CA San Francisco
- Assignee: Terrace Communications Corporation
- Current Assignee: Terrace Communications Corporation
- Current Assignee Address: US CA San Francisco
- Agency: Trellis IP Law Group, PC
- Main IPC: H04B1/69
- IPC: H04B1/69 ; H04L7/06

Abstract:
Systems, apparatuses, and methods for providing timing estimates of received signals are disclosed. In one embodiment, sub-chip timing in spread spectrum signals can be achieved without requiring oversampling in the receiver. A transmitter can adjust the timing of certain transmitted symbols by a fraction of a chip time from an expected time, and send the mistimed symbols to a receiver. The output of the receiver's de-spreading correlator can show different magnitudes for wedge symbols with different timing errors. By setting some symbols early and some late, and by taking the difference between their magnitudes, a transfer function between the result and a timing error can be determined.
Public/Granted literature
- US20070280337A1 Measurement of baseband timing in a spread spectrum communications system Public/Granted day:2007-12-06
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