On the equivalence of blind equalizers based on MRE and subspace intersections
David Gesbert, Alle-Jan van der Veen, Arogyaswami J. Paulraj · IEEE Transactions on Signal Processing · 1999
Two classes of algorithms for multichannel blind equalization are the mutually referenced equalizer (MRE) method by Gesbert et al. (see ibid. vol.45, p.2307-17, 1997) and the subspace intersection (SSI) method by van der Veen et al. (see ibid., vol. 45, no.1, p.173-90, 1997). Although these methods seem, at first sight, unrelated, we show that certain variants of the SSI and the MRE methods both optimize a new blind criterion, which is referred to as maximum coherence and, thus, are equivalent.