Semi-blind methods for communications
15.1.1 Blind source separation and channel equalization
The problem of BSS arises in a wide variety of real-life applications, which helps explain the intense interest this research area has attracted over the last years. A typical example is encountered in multi-user communication systems, where several mobile users sharing the transmission medium over the same time-frequency-code slot cause co-channel interference (CCI) with each other. CCI is due to signals from different spatial origins interfering with the signal of interest, giving rise to spatial mixtures observed at the receiving end. Hence, CCI cancellation can naturally be set out as a problem ...