“…Arguably, the linearization of power amplifier, in either predistortion or postequalization forms, has been the most frequently encountered application that incorporates adaptive nonlinear signal processing using MLP, recurrent, and radial basis function networks in the complex domain. Examples of their applications in communications are Benvenuto et al (1991), Benvenuto and Piazza (1992), Chen, Grant, McLaughlin, and Mulgrew (1993), Kechriotis and Manolakos (1994), Ibnkahla and Castanie (1995), You andHong (1998), Uncini, Vecci, Campolucci, andPiazza (1999), Deng, Sundararajan, and Saratchandran (2000), Langlet, Abdulkader, Roviras, Mallet, and Castanie (2001), Katz (2001), andPark andJeong (2002). In the applications considered in these references, it is critical to combat the often time-varying nonlinear distortion of signal constellation to match a set of desired target complex vectors.…”