Joint TOA/DOA measurements for spatio-temporal characteristics of 2.4 GHz indoor propagation channel

The aim of this paper is to present a new system based on five-port reflectometers, which measures direction of arrival (DOA) in azimuth plane and propagation time of arrival (TOA) of incoherent signals and coherent signals simultaneously for indoor communication applications. The receiver operating at 2.4 GHz consists of seven five-ports and a uniform linear array (ULA) of seven quasi-Yagi antennas. The spatio-temporal signal processing method is also proposed. Estimation procedure for joint DOA and TOA is based on the multiple signal classification (MUSIC) algorithm associated with spatial smoothing pre-processing (SSP) and the frequency domain sounding technique. It is clear from the simulation results and measurement results that it is possible to measure simultaneously TOA and DOA using five-port technique