Essays about: "polyphase structures"
Found 4 essays containing the words polyphase structures.
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1. VHDL Implementation of Flexible Frequency-Band Reallocation (FFBR) Network
University essay from Institutionen för systemteknikAbstract : In digital communication systems, satellites give us world wide services. These satellites should effectively use the available bounded frequency spectrum and, therefore, to carry out flexible frequency-band reallocation (FFBR), on-board signal processing implementation on FFBR network is needed. READ MORE
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2. FPGA Implementation of an Interpolator for PWM applications
University essay from Institutionen för systemteknikAbstract : In this thesis, a multirate realization of an interpolation operation is explored. As one of the requirements for proper functionality of the digital pulse-width modulator, a 16-bit digital input signal is to be upsampled 32 times. To obtain the required oversampling ratio, five separate interpolator stages were designed and implemented. READ MORE
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3. Performance Analysis of Spreading Sequences in Radio Channels
University essay from Blekinge Tekniska Högskola/Avdelningen för signalbehandlingAbstract : In this thesis, we have studied direct sequence spread spectrum based CDMA communication system. We have analyzed CDMA based transmitter and receiver structures operating in Rayleigh fading and additive white Gaussian noise (AWGN) channel characteristics, in which data is transmitted and received. READ MORE
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4. Design of a Finite-Impulse Response filter generator
University essay from Institutionen för systemteknikAbstract : In this thesis a FIR filter generator has been designed. The program generates FIR filters in the form of VHDL-files. Four different filter structures have been implemented in the generator, Direct Form (DF), Differential Coefficients Method (DCM), polyphase filters and (2-by-2) filters. READ MORE