VLSI architecture of Rayleigh fading simulator based on IIR filter and polyphase interpolator

Abstract

This paper presents hardware design of a Rayleigh fading simulator that efficiently generates Gaussian variates with Jakes power spectral density. The architecture is based on Komninakis design consisting of a fixed IIR filter followed by a polyphase interpolator for different Doppler rates. The hardware simulator facilitates real time error performance evaluation of wireless channels in Rayleigh fading environments. It also offers the potential of improving the evaluation speed by orders of magnitude over a software based simulation.