shadowing
RSS shadowingPerformance Comparison of Ad-Hoc Routing Protocols for Networks With Node Energy Constraints
White Paper The performance gap can be decreased by smaller number of nodes in the network or more path loss and shadowing variance. A major issue with ad-hoc networks is energy consumption since nodes are usually mobile and battery-operated. [11 Jul 2008]
Turbo-Coded ARQ Schemes for DS-CDMA Data Networks Over Fading and Shadowing Channels: Throughput, Delay, and Energy Efficiency
White Paper In this paper, modified ARQ (Automatic-Repeat-Request) techniques based on turbo coding are investigated for asynchronous DS-CDMA (Direct-Sequence Code-Division Multiple-Access) data networks under shadowing and frequency selective fading channel... [03 Jul 2008]
Symbol Technologies Remains Always-on With HP
White Paper They also did introduce an ERP solution to the environment and establishes a shadowing environment and implement fail-over protection on the servers. Symbol Technologies, a global leader in wireless and Internet-based mobile data transaction... [03 Jul 2008]
Simulative Performance Optimization for TCP Over UMTS
White Paper Generally, wireless networks have many different characteristics compared to fixed networks, as the radio signal is affected by fading, shadowing and interference that also change over time. The number of Internet users and the demand for wireless... [03 Jul 2008]
Women told: Tech isn't 'boring'
News To this end, the Commission has been running an IT work-shadowing programme for the past two years which gives girls on the cusp of choosing a career the opportunity to shadow a female senior manager from the industry for a day. [07 Mar 2008]
Building a Highly Replicated Directory: The Case for X.500 DISP
White Paper It argues that X.500 DISP (Directory Information Shadowing Protocol) is the best solution to this problem. This white paper looks at issues related to replication, when building a highly distributed and replicated directory. [06 Jan 2008]
TCP Performance Enhancement Over UMTS Network With RNC Feedback
White Paper TCP optimization for wireless networks to deal with packet losses due to fading, shadowing and contention should preferably maintain TCP end-to-end semantics with minimal dependence on intermediate nodes. [26 Dec 2007]
Satellite Systems Performance With TCP-IP Applications
As part of enhancing ns2, a channel propagation model is developed that includes shadowing from surrounding building skylines. Mobile Internet access is becoming extremely popular because users depend on the Internet for many activities in their... [06 Dec 2007]
Effect of Slow Fading and Adaptive Modulation on TCP/UDP Performance of High-Speed Packet Wireless Networks
High speed data wireless networks in multipath environments suffer channel impairment from many sources such as thermal noise, path loss, shadowing, and fading. In particular, short-term fading caused by mobility imposes irreducible error floor... [06 Dec 2007]
Freeze TCP With Timestamps for Fast Packet Loss Recovery After Disconnections
TCP optimization for wireless networks, for dealing with packet losses and disconnections due to fading, shadowing and handoffs, ideally should maintain TCP end-to-end semantics with minimal dependence on intermediate nodes. [06 Dec 2007]
Satellite Systems Performance With TCP-IP Applications
White Paper As part of enhancing ns2, a channel propagation model is developed that includes shadowing from surrounding building skylines. Mobile Internet access is becoming extremely popular because users depend on the Internet for many activities in their... [05 Dec 2007]
Freeze TCP With Timestamps for Fast Packet Loss Recovery After Disconnections
White Paper TCP optimization for wireless networks, for dealing with packet losses and disconnections due to fading, shadowing and handoffs, ideally should maintain TCP end-to-end semantics with minimal dependence on intermediate nodes. [05 Dec 2007]
Effect of Slow Fading and Adaptive Modulation on TCP/UDP Performance of High-Speed Packet Wireless Networks
White Paper High speed data wireless networks in multipath environments suffer channel impairment from many sources such as thermal noise, path loss, shadowing, and fading. In particular, short-term fading caused by mobility imposes irreducible error floor... [05 Dec 2007]
Adaptive Optimal Frame Length Predictor for IEEE 802.11 Wireless LAN
Wireless channel is dynamically time-varying and bursty caused by fading, noise and interference, shadowing, path loss and so forth. This paper presents an optimal frame length predictor in terms of maximizing the channel utilization. [05 Dec 2007]
Adaptive Optimal Frame Length Predictor for IEEE 802.11 Wireless LAN
White Paper Wireless channel is dynamically time-varying and bursty caused by fading, noise and interference, shadowing, path loss and so forth. This paper presents an optimal frame length predictor in terms of maximizing the channel utilization. [04 Dec 2007]
