Proficient envelope shaping filter for fading wireless channel estimation

In this paper a new resource efficient envelope shaping filter for fading wireless channel estimation is being proposed. Wireless communication system can be evaluated and deployed in a faster manner if wireless channel model is developed in laboratory settings. Channel model must replicate the behavior of real time channel which has got fading effects with ease. Channel model can be created if the fading parameters such as statistical correlation and power spectral density are known. Fading parameters can be realized by using time variant systems such as a filter rather than the sum of sinusoid approach which is not suitable for wide range application. In this paper a comparison of an envelope shaping filter for creating nonisotropic Rayleigh fading channel model using Elliptic lowpass IIR filter and generalized equiripple FIR lowpass filter is done in FPGA by modelling the design in VHDL.