A novel dual antenna measurement of the angular distribution ofreceived waves in the mobile radio environment as a function of positionand delay time

摘要

A dual antenna experiment to estimate the angular distribution ofnreceived waves in a mobile radio environment as a function of positionnand delay time at 2.3 GHz using a Cox-type channel sounder is described.nThe two receive antennas had a transverse separation of 0.49 λ.nThe test area is a mix of modern high-rise buildings and warehousesnlined by expanses of water. No line-of-sight path exists betweenntransmitter (30-m elevation) and the mobile receiver (2.6-m elevation).nAs the receiver moves, a two-dimensional grid of I and Qn-responses from each antenna is recorded. The data are correlatednoffline with a reference pseudo-random binary sequences and thennprocesses to give estimated 360° plots of the incident power'snangular distribution at different delay times. This information isnuseful for the design of adaptive array antenna diversity systems