TABLE OF CONTENTS Research on the capacity limits of MIMO channel was sparked by the initial works of Foschini and Gans [33] and Telatar [121] in the mid 1990 s. Since then, there has been a tremendous amount of research on MIMO capacity, both for single-user and multi-user channels. For additional results on MIMO capacity, readers may wish to consult MIMO tutorial articles [28, 38, 39]. The well known information theory books by Gallager [34] and Cover and Thomas [25] are excellent references for additional material on channel capacity. In addition, [4] provides an excellent survey of channel capacity results for general single antenna channels. The monograph by Tulino and 
on applications of random matrix theory to wireless communication [123] provides an excellent summary of general concepts of random matrix theory and their use in the study of the capacity of MIMO systems with an asymptotically large number of antennas. Readers interested in the capacity of MIMO channels in either the wideband (i.e. low SNR) regime or at high SNR should consider papers by Tulino, Lozano, and Verd [88, 89]. For readers interested in multi-user capacity, Ch. 14 of [25] serves as an excellent starting point, as does the survey paper of El Gamal and Cover [35].
