This application note discusses various design techniques for implementing resampling filters using the Altera® DSP Builder advanced blockset. The DSP Builder advanced blockset supports constraint-based high-level synthesis and is particularly efficient for implementing multiple channel, high-performance resampling filters. You can use the DSP Builder advanced blockset to quickly map highly abs...

Through analysis on principles of Binary Phase Shift Keying(2PSK) modulation and demodulation, the design scheme based on DSP Builder of DDS (Direct Digital frquency Synthesizer) is put forward. By using DSP Builder complete modulation and demodulation model, carrier signal was generated by DDS signal source. The circuit hardware structure of this design is simple and easy to implement. The mod...

Introduction This application note describes the tool flow that accelerates the hardware design of digital intermediate frequency (IF) systems comprising of digital up and down converters. The tool flow is based around the Altera® DSP Builder design entry tool, which provides high-level intellectual property (IP) megafunctions and control components that you may parameterize at a very low level...

Conventional design patterns found in many pattern atalogues are stati omponents of reusable design knowledge. They are fully des riptive of the problems they will solve, but the des riptive knowledge and design they provide does not des ribe how they an work with other patterns in a design and development pro ess. Therefore, the ontention of this thesis is that the knowledge ontained within st...

Chaotic communication has the good secrecy. It is an important branch of the modern secure communication. Differential chaos shift keying (DCSK) communication system adopts shift keying to separate the reference signal and data signal. It has a strong resistance to the multipath channel. For FPGA systems design shortcomings using a hardware description language directly, the DCSK communication ...

Implementation of a graphical user interface for a nontrivial application tends to be tedious and error prone. A simple, visual GUI builder was implemented to explore issues with the current state of graphical application development. Various implementation issues are discussed in relation to enabling a GUI builder tool to be easily extensible to prevent discouraging stagnation of GUI controls....

Signal constellation design is a major subtask of constructing an efficient communication system; it essentially entails trading-off error frequency against information throughput, a chief occupation of modem designers. We propose and implement an interactive tool for designing and simulating arbitrary signal constellations. 'To construct the user interface we have utilized Interface Builder, a...

SUMMARY To facilitate the designing process for vector-based siRNA and siRNA cassette, a tool set has been developed consisting of a siRNA target finder, a siRNA construct builder and a siRNA sequence scrambler. The siRNA target finder is used to identify candidate siRNA target sites. The program automates homology filtering, minimizes non-specific cross-reaction, filters target sites based on ...

Semantic Link Network (SLN) is a semantic Web model using semantic links—the natural extension of the hyperlink-based Web. The SLN-Builder is a software tool that enables definition, modification and verification of, as well as access to the SLN. The SLN-Builder can convert a SLN definition into XML descriptions for cross-platform information exchange. The Intelligent Semantic Browser is used t...

The Strudel system applies concepts from database management systems to the process of building Web sites. Strudel’s key idea is separating the management of the site’s data, the creation and management of the site’s structure, and the visual presentation of the site’s pages. First, the site builder creates a uniform model of all data available at the site. Second, the builder uses this model t...