Capacity Optimization and Modeling of Frequency Selective WLAN Indoor MIMO Channels Based on Measured Data

Motivated by channel measurements in different indoor locations we will show that the WLAN indoor MIMO channel is character- ized by few dominant transmission paths mainly corresponding to the LOS path and some strong reflections. In the contrary to the common statistical flat Rayleigh fading channel model we will explain that the WLAN channel is widely deterministic and fre- quency selective. Furthermore we calculate the channel capacity from the measured data and we show its dependence on the ge- ometrical arrangement of the transmit and receive antennas and the characteristics of the location. Here strong variations are ob- served and therefore we present some promising approaches that could be valid to reduce these capacity variations and enhance the overall capacity.

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