Toward an Architecture for Monitoring Private Clouds

IEEE CTN Issue: January 2012
Cloud computing has emerged as a new model for service delivery and along with it several issues, most related to adoption, security, and management. Earlier adopters as well as potential users are faced with many management challenges including some affecting the business; e.g., vendor lock-in, while others are related to service operations; e.g. monitoring of network, storage, and computational resources. IEEE Communications Magazine

Sub-Carrier-Multiplexed Duplex 64-QAM Radio-Over-Fiber Transmission for Distributed Antennas

IEEE CTN Issue: January 2012
The past years have witnessed a huge increase in the number of wireless subscribers accessing the Internet from mobile devices. The proportion of high-bandwidth services, such as video-on-demand, video conferencing, voice-over-IP and internet gaming is on the rise. A major contributor to the increase in the demand for these high-bandwidth services is the development of high bitrate portable devices, such as smart-phones and tablet PCs. These mobile devices use WiFi, 3G HSPA and imminently LTE technology for communication with wireless base stations or routers. IEEE Communications Letters

G.HNEM: The new ITU-T standard on narrowband PLC technology

IEEE CTN Issue: January 2012
There is today a worldwide interest in the implementation of Smart Grid and, in particular, the communications aspects. Although the Smart Grid will be supported by a heterogeneous set of networking technologies, the use of Narrowband Power Line Communications (NB-PLC), which operate in the (3-500) kHz band, provides several unique and fundamental benefits. Several standards bodies are engaged in the standardization of N-PLC, including the IEEE and ITU; the ITU for example, approved the first next generation OFDM-based NB-PLC family of international standards in December 2011. IEEE Communications Magazine