Nonlinear Prediction of Frequency-Domain Channel Parameters for Channel Prediction in Fading and Fast Doppler-Shift Change Environment

摘要

Performance of mobile communications often suffers from various fading phenomena. To reduce the adverse effect, we may employ such techniques as diversity reception and error-correcting code. Another countermeasure is channel prediction [1] with which we predict the channel change in time to realize pre-equalization such as transmission power control or adaptive modulation. It leads also to high-capacity spatial-domain multiple access (HC-SDMA) [2]. There exist several methods in channel prediction, namely, autoregressive (AR) method [3] [4] [5] [6] super-resolution methods such as ROOT-MUSIC [7] and ESPRIT [8], and time-domain direct prediction [9] . Each of them has problems more or less in its calculation cost and/or prediction precision.