IEEE Communications Magazine

Due to volatile market conditions and increased competition, network operators and Internet service providers have been put under enormous pressure to cut costs while providing the same if not better levels of service to customers. Several aspects of network design are subject to review to assess possible cost savings while maintaining service levels and reliability. This article focuses on Intern... View full abstract»

The management information models currently used in the Internet have several limitations. Some of them contain errors, are missing important features, or are difficult to understand. Second, standards bodies keep reinventing the wheel, which confuses the terminology (hence customers) and wastes precious time. Third, finding a good balance between too abstract, and overly detailed models is a toug... View full abstract»

The high demand for wireless Internet connectivity has driven the development of highly efficient radio link technologies. However, their performance can be compromised by inadvertent interactions with the higher-layer TCP flow control protocol. Maximizing the performance of wireless links requires that mechanisms operating at every layer of the protocol stack interact efficiently. This article pr... View full abstract»

With the growing popularity of the Internet, Korea has been successful in providing broadband Internet services to the level of universal service. More than 70 percent of households have high-speed Internet connection, and their lives have been changed dramatically. The cutting edge technology of broadband Internet has a profound impact on many aspects of the economy, education, entertainment, and... View full abstract»

With the rapid development of wireless communication networks, it is expected that fourth-generation mobile systems will be launched within decades. 4G mobile systems focus on seamlessly integrating the existing wireless technologies including GSM, wireless LAN, and Bluetooth. This contrasts with 3G, which merely focuses on developing new standards and hardware. 4G systems supports comprehensive a... View full abstract»

This article presents the results of a forecasting project funded by the European Community on the evolution of the technologies and its impact on society in the coming decade. The project requires the development of a methodology to assess the potential impact of technology evolution and provides a tool for decision makers to prioritize the allocation of research investments. A brief outline of s... View full abstract»

The need for critical improvements to the North American surface transportation infrastructure vis-a-vis alleviation of congestion while enhancing public safety has led to new intelligent transportation system (ITS) infrastructure based on vehicle-to-vehicle (v2v) wireless communications. The allocation of 75 MHz in the 5.9 GHz band for dedicated short-range communications (DSRC) may also enable f... View full abstract»

This article addresses issues with designing a blind oversampling clock and data recovery unit (CDR) that meets jitter tolerance specifications. Asymptotic limits on jitter tolerance are derived assuming ideal phase detection based on a priori statistics of the received signal, proving that the coarse timing resolution of blind oversampling CDR relies on a phase detection algorithm that makes good... View full abstract»

Gigabit Ethernet networks have seen great demand in recent years. This growth was fueled by both an increase in port speed at the client side and new applications in MAN and WAN space. In this article, we report a highly integrated Ethernet switch IC design that supports 12 gigabit ports and one 10 Gb port. All packet memory and search memory are integrated on chip. A deeply pipelined structure wi... View full abstract»

We propose an efficient hardware implementation of the advanced encryption standard algorithm, with key expansion capability. Compared to the widely used table lookup technique, the proposed basis transformation technique reduces the hardware overhead of the S-box by 64 percent. Our pipelined design has a very high throughput rate. Using typical 0.35 μm CMOS technology, a 200 MHz clock is ... View full abstract»