Counting on computers in DSP education

Global competition is forcing universities to rethink their approach to undergraduate education. Advanced hardware and software tools make it possible for students to grasp fundamental engineering concepts quicker, ultimately enhancing the undergraduate educational experience. The article highlights the roles played by software in DSP education, including symbolic and numeric processing as well as high-level programming of DSPs. The authors include a survey of some of the more popular software environments and identify important logistical issues     

Teach-Ware: DSP education resources

This paper describes a variety of TeachWare, i.e., digital signal processing (DSP) education resources that are useful for introducing DSP concepts, operations, and algorithms. The paper provides such information as the type of resource, its status, and format.     

A changing role for DSP education

In academia, most courses in DSP have historically been restricted to the graduate level and, at that level, the emphasis is often on the mathematics and theoretical issues. Following tradition, most curricula start with circuit theory and progress through continuous-time Fourier analysis to finally reach DSP. Motivation is the key issue. Most engineering students would probably testify that their initial courses are usually only endured, not enjoyed. In a marketplace with many students, educators could use the first course as a “gate.” However, many of the curriculum changes at the entry level have turned this attitude around by involving students in projects and activities that convey some interesting aspect of the engineering process. The goal is almost always to motivate further study and questioning, and this is where DSP has some natural advantages     

Asynchronous hands-on experiments for Mechatronics education

There has been great interest and effort at many engineering educational institutions to introduce on-line, or “asynchronous” courses. However, at the present time, the vast majority of on-line or distance education courses lack any hands-on activities that require the manipulation of physical artifacts or physical experimentation. This paper describes a series of hands-on Mechatronics experiments associated with an introductory Mechatronics course that could be done “anytime, anywhere” (asynchronously). The experiments are based on a relatively inexpensive “kit” of components and a single-board microcontroller.     

泛欧数字集群系统TETRA的标准与技术发展

本文主要介绍ＴＥＴＲＡ的标准，技术及其发展概况。     

Catching the TEN-34 [Trans-European Network, 34 Mbit/s]

A new high-speed computer network should vastly improve the ability of bandwidth-hungry research organisations across Europe to co-operate with one another. The TEN-34 (Trans-European Network interconnect at 34 Mbit/s) is the first Europe-wide high-speed computer network for the research community. Designed to meet the rapidly increasing demand for bandwidth, it provides improved communication facilities linking the various European national research networks (NRNs), combined with enhanced cooperation between the NRNs and the major European telecom operators, who are all involved in the project     

Stratix器件中的DSP模块极大提升DSP性能

StratixTM器件中的数字信号处理(DSP)模块采用的高性能嵌入式DSP单元专门针对DSP应用而优化。这些应用包括里克(Rake)接收器、因特网协议(IP)语音传输(VoIP)网关、正交频分复用(OFDM)收发器、图像处理应用和多媒体娱乐系统。 Stratix DSP模块消除了DSP应用中的性能瓶颈,提供了可预测的性能并且节约了资源。这一灵活性使得Stratix器件中的DSP模块非常适合实现复杂的DSP系统,同时还可提供很高的数据吞吐能力。     

Trends in DSP

A new specification was released that, for the first time, "standardizes" the software and firmware infrastructure for a broad base of specialized signal processing devices used within the baseband signal/modem processing engines of an advanced wireless system. Dubbed MHAL, or modem hardware abstraction layer, this open specification facilitates the reuse of the functional software and firmware components that implement a radio's physical layer channel processing across different radio platforms. The benefits of such a specification are obvious: code reuse such as this provides significant savings in both the time to market and cost of development for subsequent radio products or upgrades to existing products. This in turn allows wireless original equipment manufacturers (OEMs) to offer their customers radio technologies with new features and capabilities faster and at reduced overall cost. Even with this benefit, however, a question remains as to whether MHAL will be broadly adopted across the wireless market.     

实时操作系统DSP/BIOS在DSP开发中的应用

本文介绍了实时操作系统DSP/BIOS在DSP开发中的应用。首先简述了DSP应用的一般模型,并说明了实时操作系统在DSP外设管理,实时性能分析,程序总体流程控制中的应用。     

Directions in DSP processors

The evolution of single-chip digital signal-processor (DSP) architectures is discussed. It is argued that multiple arithmetic units and functionally enhanced arithmetic units are promising directions for further evolution of the datapath architecture. Candidate structures are defined, and the operation of popular DSP benchmarks on these structures is demonstrated     

Embedding DSP

Tools for designing systems around digital signal processor (DSP) chips are discussed. These tools accelerate the design and development of systems with embedded DSPs and can also reduce development costs by letting the engineer focus on a specific application rather than the myriad details of the programming task itself. While a developmental program is running, designers can use higher-level tools-debuggers, simulators, and emulators-to help provide insight into the program's execution and flaws. Some recent upgrades are noted, and tools for block-diagram algorithm development are examined. A table of representative packages is given     

Trends in multicore DSP platforms

Multicore digital signal processors (DSPs) have gained significant importance in recent years due to the emergence of data-intensive applications, such as video and high-speed Internet browsing on mobile devices that demand increased computational performance but lower cost and power consumption. Multicore platforms allow manufacturers to produce smaller boards while simplifying board layout and routing, lowering power consumption and cost, and maintaining programmability.     

Recent advances in DSP systems

Some of the advances that have contributed to the realization of communication systems with programmable digital signal processors (DSPs) are described. DSP architectures are examined, covering the performance improvements resulting from advances in circuitry as well as in architecture. Architectural advances discussed are parallel processing, function generation, integrating analog circuits, and sigma-delta analog-to-digital conversion. DSP applications to high-speed modems, trellis-coded modulation, and echo cancellation are examined. The DSP implementation of a V.32 modem is described     

雷达信号处理中通用DSP的设计

结合在雷达信号处理系统中通用DSP的开发与设计经验，对通用DSP的硬件和软件设计作了分析与探讨。     

DSP在软件无线电接收机中的应用

数字信号处理器（DSP）是鉴于数字滤波和快速傅立叶变换的数字信号处理技术。本文指出在软件无线电（Software Radio)接收机中，DSP技术是其核心技术之一。在接收机中，模拟信号进行数字化后的处理任务全由DSP软件承担，主要完成各种数据流相对较低的基带信号的处理。以TI公司TMS320C5410为例，介绍了其主要结构和特征，并给出了以此为核心的软件无线电接收机的系统框图。