Investigation of polarization diversity influence on indoor CDMA propagation

US WEST conducted an indoor code division (CDMA) personal communications propagation trial with the goal of determining an optimum antenna architecture for indoor propagation in a typical office environment. Linear vertical polarization (LVP) with spatial diversity was compared with other types of polarization diversity (circular polarization, linear dual polarization, etc.) with and without spatial diversity. The results indicate that a pair of antennas in a single antenna panel that makes use of dual linear vertical-horizontal polarization have a comparable performance in office environments to a pair of LVP antennas hosted in separate panels that are separated by 3 feet. By implementing the former configuration, the number of antenna panels needed for indoor coverage deployment can be reduced by 50%.