SIGNAL CORRELATION IN MULTIPLE ANTENNAULTRA WIDEBAND INDOOR CHANNELS

摘要

In order to optimize the performance of multiple antennasystems for communications applications it is desirable tohave little correlation between the signals at the differentreceiving antennas. This can be achieved by choosingappropriate antenna characteristics and positions. Forultra wideband (UWB) applications this task is even morechallenging, since correlation coefficients are dependenton frequency. This paper presents an investigation of thecorrelation of the signals among the elements of a linearantenna array in an UWB indoor propagation scenario.For this purpose both a theoretic approach as well as anapproach based on propagation simulations are appliedand the obtained results are compared to verificationmeasurement results from a real indoor scenario. It turnsout that signal correlation severely depends on theposition of the antenna array inside the room. With adedicated placement of the antenna array pretty lowcorrelation coefficients can be obtained over the entirefrequency range regulated by the FCC for UWBapplications.