On the Achievable Rate of Stationary Fading Channels

An Effective Approach to Estimate the Second‐Order Polynomial Models in Time‐Varying Channels

“…where I(m i ) denotes ICI at m i subcarrier. If the pilot spacing satisfies the Nyquist criterion [11] , h l ave can be estimated by an inverse DFT ofĤ f (m i , m i ). Moreover, it is pointed out in Ref.…”