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ADSP-21262 EZ-KIT Signal Cancellation / System Identification

Question asked by chriss on May 20, 2011
Latest reply on May 20, 2011 by chriss

I’m new to DSP, I have an ADSP-21262 EZ-KIT Lite and working through the examples I have managed to code a LMS filter.  For my application the error signal is generated in analog electronics from an op-amp.  (Have attached a block diagram)  Due to the delays through the ADC, DAC, and op-amp the LMS filter is unable to calculate the weights properly.  This is where I am stuck: is this an impossible problem; or are there algorithms that can compensate for the external delay?