Optimal Transportation Policy with Strategic Locational Choice

Abstract This paper presents a model of strategic locational choice by duopolistic firms in an urban area where consumer locations are endogenous and where a public facility is exogenously fixed. A welfare analysis taking their strategic behavior into account is conducted. It is shown that the firms' equilibrium locations often differ from the optimal locations which, in contrast to standard location theory, are not at the quartiles of the urban area. Corrective transportation taxes or subsidies can be used to support an optimal locational structure. Changes in transportation costs require unit-for-unit offsetting changes in transportation taxes or subsidies

Performance analysis of the FFT filter bank-based summation CFAR detector

The constant false alarm rate (CFAR) detector based on the FFT filter bank is computationally efficient and widely used for the detection andfrequency estimation ofnarrowband signals embedded in noise. The standard approach for improving its detection performance is to average the power spectral density (PSD) estimates obtained from multiple input data blocks prior to performing a detection decision. Since the variance of the averaged PSD estimates has an inverse linear dependence on the number of input data blocks, the conjecture that a 3 dB performance gain will resultfrom doubling the number of input data blocks processed is plausible. However this paper shows that the actual performance gain obtained with two input data blocks is less than 3 dB over the single block case and the performance gain for each successive doubling of the number of input data blocks decreases monotonically and appears to converge to a constant around 1.5 dB