Patent ID: 8743854

Claim:
An apparatus for signal separation and SINR improvement comprising: an SINR improvement unit configured to receive a noisy signal containing one or more unknown signals, the SINR improvement unit configured to improve an SINR of the one or more unknown signals, and thereby generate an SINR-improved noisy signal; wherein the SINR improvement unit is configured to improve the SINRs of the one or more unknown signals by using independent component analysis on a per-sensor basis; wherein the independent component analysis technique is one of: an independent component analysis for instantaneous mixtures; and an independent component analysis for convolutive mixtures; a reference signal generator configured to identify a signal from the SINR-improved noisy signal and generate a reference signal corresponding to the identified signal, without a priori knowledge of the identified signal, wherein the reference signal generator receives the SINR-improved noisy signal from the SINR improvement unit; and a subtraction unit configured to subtract the reference signal from the noisy signal; wherein the reference signal generator is configured to identify a CDMA-based signal; wherein the reference signal generator comprises: a code search unit configured to identify the scrambling code for one unknown signal in the SINR-improved noisy signal; a demodulation unit configured to demodulate one signal in the SINR-improved noisy signal using the identified scrambling code; and a remodulation unit configured to remodulate the demodulated unknown signal using the scrambling code in order to create the reference signal.