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Bit error simulation for π/4 DQPSK mobile radio communications using two-ray and measurement-based impulse response models

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3 Author(s)
Fung, V. ; Bell Northern Res., Richardson, TX, USA ; Rappaport, T.S. ; Thoma, B.

An accurate software/hardware bit-by-bit error simulator for mobile radio communications is described. Simulation results in indoor and outdoor channels are compared with theoretical results. Bit error rate (BER) results in simulated frequency-selective fading channels generated by several channel models such as two-ray, constant amplitude, and simulated indoor radio channel impulse models (SIRCIMs) are presented. It is shown that BER is not only dependent on the RMS delay spread, but also on the distribution of temporal and spatial multipath components in local areas. An important result is that a two-ray Rayleigh fading model is a poor fit for indoor wireless channels and, if used, can underestimate the BER by orders of magnitude. A real-time bit error simulation of video transmission using the bit-by-bit error simulator is described. The simulator, called BERSIM, is shown to be a useful tool for evaluating emerging data transmission products for digital mobile communications

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Selected Areas in Communications, IEEE Journal on  (Volume:11 ,  Issue: 3 )