A system and method of recovering symbol timing from a high symbol rate TDD or TDMA broadband transmission. A correlator operating at a fraction of the symbol rate receives in-phase and quadrature data signals from a broadband demodulator and processes those signals using a predefined match filter for a pilot signal to detect the pilot signal. The correlator measures any timing error in the symbol timing and adjusts a pointer in a memory buffer to replay the pilot signal to the correlator. Again, any timing error is determined and the pointer in the memory buffer is adjusted for a final replay of the pilot signal as well as the data to the correlator. At this point the timing error in the symbol timing is reduced to a minimum. With symbol timing established, coefficients in an equalizer are adjusted so that the remaining data transmission is properly received.

Title
Fast symbol timing recovery for transmitted digital data
Application Number
10/712842
Publication Number
20040136478
Application Date
November 12, 2003
Publication Date
July 15, 2004
Inventor
Qingyi Zheng
Newark
CA, US
Yanbin Yu
Fremont
CA, US
Agent
Felix L Fischer Attorney At Law
CA, US
IPC
H04L 27/06
H03D 01/00
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