Performance analysis of a new topology of distributed antenna systems

Distributed antenna system (DAS) has been widely regarded as an extension of multiple-input and multiple-output (MIMO) technology because it has superior ability in reducing other-cell interference (OCI), as well as improving coverage and capacities in a multi-cell environment. This paper analyzes and compares the downlink ergodic capacity performance between the traditional distributed antenna system (TDAS) and the newly emerging distributed horizontal antenna system (DHAS) using (1) the blanket transmission scheme (BTS), (2) the single selection transmission scheme (SSTS) or (3) the conventional transmission scheme (CTS) in a multi-cell environment for the downlink.