Detection with Asynchronous Sampling

Sampled data detection schemes typically require some type of timing recovery algorithm to synchronize the received samples with the transmitted data. The goal of this project is to develop a method that would allow sampled data detectors to operate with asynchronous samples. The sample clock would operate at a fixed, slightly higher (by about 0.1%) than the maximum transmission (write) clock frequency. Unlike other ansynchronous methods that have been proposed, the correct sample values are not interpolated from the actual samples. Instead, a predictive filter subtracts the amplitude error resulting from the timing phase error.

For more information see

• T. Oenning, "Digital detection in a communication or data storage system using asynchronous sampling," M.S. Thesis, June 1998. Abstract, PDF File (640k)
  
  
• T. Oenning and J. Moon, "Digital detection with asynchronous sampling using amplitude error prediction," IEEE Trans. Magn., vol. 34, no. 4, pp. 1931-1933, July 1998. Abstract, PDF File (132k)
  
  
• TMRC '97 Poster Presentation M-2.
  
  

Copyright @ University of Minnesota CDSLab
Last modified Mar 2007