Partial-band jammer suppression in FFH spread-spectrum system usingFFT

This paper presents the performance evaluation of partial-band jammer suppression using fast Fourier transform (FFT) as an alternative in a fast frequency-hopped spread-spectrum (FFH/SS) communication system. The FFH/SS system employs a clipper to restrict the effect of a partial-band jammer before diversity combining. No additional side information of the jammer is required, and the analytical expression for the bit error rate (BER) is derived. It is shown that the performance of the FFT-based clipper receiver is better than that of the square-law linear combining receiver and comparable to that of the square-law clipper receiver     

Combined Method of Separation of Variables. 4. Nonstationary Heat Conduction in Solids with Boundary Conditions of the Second Kind

Journal of Engineering Physics and Thermophysics - The combined method of separation of variables applied to the solution of the initial boundary-value problems on the nonstationary heat conduction...