Patent ID: 7508887
Filing Date: 2009-03-24
Classification: H04L

Abstract:
1. An apparatus for signal acquisition with transmit blanking compensation for collisions between a desired received signal and a transmitted signal comprising: a blanking block for accepting a received signal and a blanking signal wherein when the transmitted signal is transmitted, the blanking signal is asserted and when the transmitted signal stops, the blanking signal is de-asserted thereby providing a received signal with blanking; a correlation block for correlating the received signal with blanking from the blanking block with a known sequence of symbols corresponding to the desired received signal wherein the correlation block outputs a correlation metric and outputs a number of symbols blanked for each correlation metric computed; means for adjusting one of the correlation metric and a variable threshold, against which the correlation metric is compared, using the number of symbols blanked; and a decision block for comparing the adjusted correlation metric to a fixed threshold or the correlation metric to the variable threshold wherein if the adjusted correlation metric exceeds the threshold or if the correlation metric exceeds the variable threshold, the decision block determines that the desired signal is detected.