The Impact of Antenna Directivity and Channel Bandwidth on the Power Spectral Density of Wideband and UWB MISO Channels

The combination of MIMO with WideBand (WB) and Ultra-WideBand (UWB) systems imply many new effects, which make the conventional channel models developed for narrowband transmissions to be inadequate for communications with large bandwidth. In this paper, the authors use the Fourier analysis of the Cross-Correlation Functions (CCF)s between the SpaceTime-Frequency (STF) transfer functions of two sub-channels of an outdoor WB/UWB MIMO wireless channel to derive the Power Spectral Density (PSD) in a stationary scenario. The assumptions of the stationary scenario transform the MIMO channel into a Multiple-In Single-Out (MISO) channel and the PSD is determined when the channel bandwidth is wide or ultra-wide.

Provided by: IARIA Topic: Mobility Date Added: Jul 2011 Format: PDF

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