A spread-spectrum communication system provides an effective signal-to-noise ratio (SNR) of received orthogonal frequency division multiplex (OFDM) slots in the presence of timing errors. Effective SNR can serve as a diagnostic tool for determining whether there was a timing error when a measured packet error rate (PER) remains high, and a predicted PER from the effective SNR remains low. A loop can use the effective SNR to control a time reference used by an OFDM decoder.

Title
Timing control in orthogonal frequency division multiplex systems based on effective signal-to-noise ratio
Application Number
11/119240
Publication Number
20060245347
Application Date
April 29, 2005
Publication Date
November 2, 2006
Inventor
Peter J Black
San Diego
CA, US
Michael John Mangan
San Diego
CA, US
June Namgoong
Chula Vista
CA, US
Hao Xu
San Diego
CA, US
Srikant Jayaraman
San Diego
CA, US
Agent
Qualcomm Incorporated
CA, US
IPC
H04J 11/00
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