Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing in Fast Fading Channels

of the Dissertation Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing in Fast Fading Channels by Sungsoo Kim Doctor of Philosophy in Electrical Engineering University of California, Los Angeles, 2003 Professor Gregory J. Pottie, Chair The increased data rates and reliability required to support emerging multimedia applications require new communications technology. We present results regarding two techniques used in high data rate transmission – orthogonal frequency division multiplexing (OFDM) the and multiple-input multiple-output (MIMO) scheme. The aim of this dissertation is to find efficient methods of providing reliable communication links using MIMO-OFDM under fast fading scenarios. Toward this end, both equalization and channel coding techniques are investigated. Despite many advantages of OFDM, OFDM signals are very susceptible to the time-varying channel, which breaks the orthogonality between subcarriers, resulting in interchannel interference (ICI). The ICI increases an irreducible error floor