Propagation model and channel simulator under indoor stair environment for machine-to-machine applications

The channel impulse response (CIR) under indoor stair environment is modeled. In this model, the amplitude and phase of the CIRs are described as Weibull and uniform distributed random variables, respectively. The CIRs can be simulated using the proposed model. Then, Orthogonal Frequency Division Multiplexing (OFDM) communication system is implemented on the measured and simulated channels. Based on the proposed model and OFDM system implementation, a preliminary channel simulator is developed. The input and output constellations, as well as the corresponding bit error rate can be visually observed using this channel simulator.