Patent ID: 8867644

Claim:
A receiver for receiving a complex-valued baseband signal that includes noise, the receiver configured to split the complex-valued baseband signal into a real part associated with a real branch and an imaginary part associated with an imaginary branch, the receiver comprising a receiver block configured to: model the real and imaginary branches as a Multiple Input Multiple Output system with two real-valued inputs and two real-valued outputs, wherein the real branch corresponds to a first user in an adaptive alpha-QPSK modulated signal and the imaginary branch corresponds to a second user in the adaptive alpha-QPSK modulated signal; and suppress interference for multiple users in a first channel using correlations of the noise, both in time and between branches of the first channel, wherein one branch of the first channel is used to detect the symbol sequence and not for spatial temporal interference suppression, and the other branch of the first channel is used for spatial temporal interference suppression and not for symbol sequence detection.