Currency substitution theory, a new chanel to enter the exchange rate as the monetary transmission mechanism

This paper examines whether in analysis of the impact of monetary policy, the exchange rate can play a role along with the interest rate as a transmission mechanism of monetary policy effects on economic variables or not? For this purpose, the general dynamic stochastic equilibrium models were used in the form of a New Keynesian small open macro-economy. This model was designed for Iran's economy by considering oil-based economy's and the currency substitution Existence. Then, its calibration and simulation was conducted with Iran's economic data for the period of 1995-2011. The results from model validation, univariate and multivariate recognition of Markov Monte Carlo chain and analysis of the model impulse responses showed that in Iran's economy, the exchange rate plays a role along with the interest rate as a monetary transmission mechanism.