ISI simulation for indoor wireless communications

In this paper, simulations for intersymbol interference (ISI) and outage probability for site-specific environments are presented. All factors such as the impulse response, carrier recovery, and timing recovery are considered in the simulations. An approximation method which can save a large amount of computing time and storage space in the calculation of many impulse responses in a room is proposed. This approximation method is used to simulate ISI for several indoor environments, including a room furnished with metal shelves and rooms separated by walls with and without windows on top of the walls. Results show that the existence of windows can raise the average level of received power, however, due to a greater dispersion of multipath waves, the allowable data transmission rate is lowered.