Comparison of Angular Dispersion Metrics in Synthetic and Measured Radio Channels

One of the most promising ways to provide significant capacity gains in personal wireless networks, is to utilize adaptive antenna systems. These provide high interference and noise suppression capabilities. For most applications 2D descriptions are sufficient as largely only linear antenna arrays will used in 1 generation implementations. Thus, this paper will focus on 2D directional metrics. The effectiveness of adaptive antenna systems is closely linked with the perceived angular dispersion m(φ) of the radio environment, expressed via a correlation relation between antenna diagram a(φ) and environment angular response e(φ) [1]. This yields a simple multiplicative angular frequency domain description (ωφ being the angular sidelobe frequency or angular harmonic [2]). Thus, it is similar to the convolution property between a filter and input in the temporal domain [2]