Modeling the statistical time and angle of arrival characteristics of an indoor multipath c.pdfVIP

Mo deling the Statistical Time and Angle of Arrival Characteristics of an Indo or Multipath Channel Quentin H Sp encer Brian D Jes Michael A Jensen A Lee Swindlehurst Department of Electrical Computer Engineering Brigham Young University Provo UT voice fax email spencerqeebyuedu Keywords indo or radio communications radio propagation communication channels multipath channels Abstract Most previously prop osed statistical mo dels for the indo or multipath channel include only time of arrival characteristics However in order to use statistical mo dels in simulating or analyzing the p erformance of systems employing spatial diversity combining information ab out angle of arrival statistics is also required Ideally it would b e desirable to characterize the full spacetime nature of the channel In this pap er a system is describ ed that was used to collect simultaneous time and angle of arrival data at GHz Data pro cessing metho ds are outlined and results obtained from data taken in two dierent buildings are presented Based on the results a mo del is prop osed that employs the clustered double Poisson time of arrival mo del prop osed by Saleh and Valenzuela The observed angular distribution is also clustered with uniformly distributed clusters and arrivals within clusters that have a Laplacian distribution I Introduction Wideband digital wireless communications are b ecoming increasingly more practical in indo or environments The ava