摘要

Consider a random coefficient AR(1) model, X-t = (rho(n) + phi(n))Xt-i + u(t), where {rho(n,) n >= 1} is a sequence of real numbers, {phi(n), n >= 1} is a sequence of random variables, and the innovations of the model form a sequence of i.i.d.random variables belonging to the domain of attraction of the normal law. By imposing some weaker conditions, the conditional least squares estimato