Blind Source Separation witha
Time-Varying Mixing Matrix · 2007
Blind source separation (BSS) istheprocess ofusing multiple sensors toseparate multiple randomsignals froma received linear combination. Inthis paper, weapplyblind source separation techniques tomixtures ofdigital communications signals. We predict theachievable symbolerrorratewhenthe signals arereceived onthesamecarrier frequency andblindly separated. Ina wireless environment wherethesources are mobile ortheenvironment ischanging, themixing matrix will varywithtime. Ourprimary contribution isthatweidentify the majorsource oferror inseparation. We extend anadaptive step size algorithm tothecomplex-valued casetomitigate theerrors inadynamic environment. ' , ~~~~~~~~~x_m(t)>