Patent ID: 9083589
Filing Date: 2015-07-14
Classification: A61B,H04B,H04L

Abstract:
1. A signal receiver comprising: an automatic gain controller configured to receive an encoded signal from an in vivo transmitter in a low signal to noise ratio (SNR) environment and to actively adjust the signal receiver to variations in frequency and power of the received encoded signal, and wherein the automatic gain controller is configured to determine a first frequency having a highest amplitude in a power spectrum of the received encoded signal; a demodulator coupled to the automatic gain controller and configured to receive an output signal from the automatic gain controller, wherein the output signal comprises information regarding the first frequency, and reconstruct the encoded signal locked in frequency and phase to the received encoded signal and configured to approximate an original un-encoded signal, wherein the demodulator is tuned to the first frequency such that the demodulator is configured to adapt to changes in frequency of the received encoded signal; a symbol recovery component configured to receive the reconstructed encoded signal and determine a signal clock of the reconstructed encoded signal and identify a start sequence in the reconstructed encoded signal, and wherein the symbol recovery component is configured to determine a phase of the reconstructed encoded signal, and produce a decoded signal with substantially no error.