Patent ID: 8711979
Filing Date: 2014-04-29
Classification: H04B

Abstract:
1. A wireless receiver for enhancing sensitivity and interference rejection, comprising: a RF front end for receiving a signal with an asynchronous characteristic pattern; a pattern discriminator coupled to the RF front end for detecting the characteristic pattern in the received signal in an asynchronous mode, the pattern discriminator arranged to save power if the received signal is not identifiable; a predictor coupled to the RF front end and arranged to determine a noise floor, and predict, responsive to the determined noise floor, the presence of non-zero values of a subsequently received portion of the received signal in pseudo synchronous mode wherein the pattern is almost coherent; a tracker connected with said predictor via a control bus for receiving the predicted non-zero values from the predictor, the tracker tracking a noise component in the received signal between the received non-zero values; a subtractor connected with said tracker for subtracting the noise component from the received signal to output a processed signal; a demodulator connected with said subtractor for demodulating the processed signal; and a comparator connected with said pattern discriminator, said predictor and said demodulator for comparing the outputs thereof to produce a quantized data output signal.