Field tests to measure the space-time characteristics of narrowband wireless channels in multiple-antenna systems

The potential for extraordinary improvements in channel capacity promised by space-time modem technology has necessitated a greater understanding of space-time channel characteristics. A model that coheres the essential temporal and spatial character of wireless channels would benefit space-time code design but is as yet unformulated. This study concerns itself with the development and execution of field tests to more fully characterize narrowband wireless channels in multiple-antenna systems for land mobile radio systems. Results of these tests suggest an important relationship between channel independence and the relative geometric orientation of the local scattering corridor and transmit antenna array. An explanation involving the available scattering angle at the receiver is suggested as the mechanism for this relationship