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 TitleDate AddedCompany
whitepaper Expected Data Rate: An Accurate High-Throughput Path Metric for Multi-Hop Wireless Routing0000-00-00 University of Utah
  This paper presents a new metric, Expected Data Rate (EDR), for accurately finding high-throughput paths in multihop ad hoc wireless networks. The metric is based upon a new model for transmission interference which is a critical factor in determining path throughput. This paper constructs a realistic and practical transmission interference model by determining transmission contention degree of each link as a function of the wireless link loss; quantifying the impact of the wireless link loss on medium access bakeoffs; and considering possible concurrent transmissions when two links do not interfere with each other. The transmission interference model also takes the non-optimality of IEEE 802.11 medium access scheduling into account.

Tags: Mobile and Wireless, Mobile and Wireless		   
whitepaper Smart Antenna Systems0000-00-00 International Engineering Consortium
  A smart antenna system combines multiple antenna elements with a signal-processing capability to optimize its radiation and/or reception pattern automatically in response to the signal environment.

What does an antenna do in a telecommunications system? It is the port through which radio frequency (RF) energy is coupled from the transmitter to the outside world and, in reverse, to the receiver from the outside world.

Antennas have been the most neglected of all the components in personal communications systems. Yet, the manner in which energy is distributed into and collected from surrounding space has a profound influence on the efficient use of spectrum, the cost of establishing new networks, and the service quality provided by those networks.

Tags: Telecommunications		   
whitepaper Capacity Gains of Single Antenna Interference Cancellation in GSM2004-05-27 Nokia
  Single Antenna Interference Cancellation (SAIC) is a very interesting and promising technology currently being standardized in 3GPP as part of GERAN Release 6. This interference reduction technique takes advantage of the latest developments in signal processing and receiver algorithms in a cost-efficient way. In most advantageous interference conditions, SAIC can improve the signal-to-noise ratio over 10 dB. In this paper, the effect SAIC on the capacity of a typical GSM network are investigated. Also, an overview of SAIC algorithms is presented and a new interface for mapping the link and network simulator is described.

Tags: Telecommunications, Mobile and Wireless		   
whitepaper Next-Generation Optical Transmission Fibers0000-00-00 MCI
  The first part of this paper gives a brief introduction of modern optical transmission fiber technology. The second part of this paper illustrates detailed numerical analysis, lab tests, and field trials of MCI's next-generation fiber development process from 2000 to 2005. The new Medium Dispersion Fiber (MDF) has dispersion of around 7~8 ps/nm/km at 1550nm, and a relatively low dispersion slope in the S-C-L band, which will satisfy MCI next-generation transmission fiber technical specifications and requirements at 20 Pb/s*km for "short fat" (20 Tb/s x 1000 km) and "long thin" (6.67 Tb/s x 3000 km) future DWDM, Metro, Regional, and ULH network application and deployment. The development and deployment of this extremely high-optical performance fiber will help the telecommunications industry to introduce new applications and keep MCI at the forefront of optical transmission technology around the world.

Tags: Network Technologies, Network Management, Network Technologies, Telecommunications, Telecommunications, Telecommunications, Business Functions, Network Technologies		   

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