Patent ID: 9613236
Date: 2017-04-04
CPC Classifications: G06K,H03M,H04L

Claim:
1. An adaptive noncoherent receiver for recovering RFID data transmitted over a communication channel comprising: a converter configured to receive a phase modulated input signal and convert the received input signal into a vector representation by sampling the received input signal; a channel equalizer comprising a filter bank, where the channel equalizer is configured to cancel interference associated with the communication channel by filtering the received input signal utilizing the filter bank and generate a first output signal; a phase rotator configured to receive the first output signal and rotate the phase of the first output signal to generate a second output signal; wherein the receiver further comprises a non-coherent estimation unit configured to receive the second output signal and generate a soft metric estimation; wherein the non-coherent estimation unit is updated based upon feedback from a noncoherent soft-input-soft-out (SISO) decoder; wherein the SISO decoder is updated utilizing the soft metric estimation; wherein the SISO decoder is iteratively updated; and a channel estimation unit configured to estimate a channel impulse response of the communication channel and update the filter bank.