1 DIVERSITY AND MULTIPLEXING TECHNIQUES OF 802.11N WLAN

Abstract – This paper is to analyze an improvement in per-formance of WLAN (Wireless Local Area Networks) systems introduced by space and space-time diversity, as well as spa-tial multiplexing. These MIMO (Multiple-Input Multiple-Output) techniques are implemented in today’s “pre-N” hardware, and will be approved in the emerging 802.11n spe-cification. In order to perform the experiment, a Matlab ap-plication, that simulates WLAN physical layer, has been deve-loped. Index Terms – Signal processing, MIMO systems, diversity schemes, coding, modulation