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- Sony DMX-WL1 Bravia Wireless Link
- Photo gallery:Sony DMX-WL1One of Sony's latest strategies with HDTVs is to market a range of add-ons, such as the Bravia Internet Video Link, designed to work with its Bravia televisions. The most expensive such device so far is the DMX-WL1, otherwise known as the Bravia Wireless Link Module....
- Product reviews 2009-02-03
- Cellular medical imaging for the people
- This is not an innovation which will make much sense to Americans. A UC Berkeley scientist, Boris Rubinsky, who also works for Hebrew University in Jerusalem has developed a system for moving complex medical images over cellular links. The key to success is placing the...
- Blog posts 2008-05-02
- TCP With Header Checksum Option for Wireless Links: An Analytical Approach Towards Performance Evaluation
- TCP performs poorly in wireless mobile networks due to large bit error rates. Basically, the TCP sender responds to these losses as if they were due to congestion in the network, and reduces the congestion window unnecessarily. In earlier work, it has been shown that adding a TCP header checksum...
- White papers 2007-06-01
- Cross-Layer Architecture for Adaptive Video Multicast Streaming Over Multirate Wireless LANs
- Multicast video streaming over multirate wireless LANs imposes strong demands on video codecs and the underlying network. It is not sufficient that only the video codec or only the underlying protocols adapt to changes in the wireless link quality. Research efforts should be applied in both and in a synchronized...
- White papers 2007-05-01
- Multiple Layer Error Control Over Wireless Links
- This paper compares the wireless performance of TCP with or without selective acknowledgments and in the presence or absence of a reliable link layer protocol, in order to determine whether link layer error control remains beneficial for TCP variants with improved error recovery capabilities, such as TCP SACK. The paper...
- White papers 2007-03-01
- A Comparison of Mechanisms for Improving TCP Performance Over Wireless Links
- Reliable transport protocols such as TCP are tuned to perform well in traditional networks where packet losses occur mostly because of congestion. However, networks with wireless and other lossy links also suffer from significant losses due to bit errors and handoffs. TCP responds to all losses by invoking congestion control...
- White papers 2007-01-01
- Making Retransmission Delays in Wireless Links Friendlier to TCP
- Heterogeneous communication networks with their variety of application demands, uncertain time-varying traffic load, and mixture of wired and wireless links pose several challenging problem in modeling and control. This paper focuses on the packet delay, which is a particularly important variable for efficient end-to-end congestion control. In particular, the paper...
- White papers 2007-01-01
- TCP Westwood: Bandwidth Estimation for Enhanced Transport Over Wireless Links
- TCP Westwood TCPW is a sender-side modification of the TCP congestion window algorithm that improves upon the performance of TCP Reno in wired as well as wireless networks. The improvement is most significant in wireless networks with lossy links, since TCP Westwood relies on end-to-end bandwidth estimation to discriminate the...
- White papers 2007-01-01
- Joint Congestion Control and OFDMA Scheduling for Hybrid Wireline-Wireless Networks
- This paper considers joint congestion control and multiuser scheduling in a hybrid wireline and wireless network, where the air interface of wireless links is based on Orthogonal Frequency Division Multiplexing OFDM. For static channels, the paper formulates this cross-layer design as a Network Utility Maximization NUM problem with both wireline...
- White papers 2006-12-13
- Performance Measurement of 802.11a Wireless Links From UAV to Ground Nodes With Various Antenna Orientations
- This paper reports measured performance of 802.11a wireless links from an Unmanned Aerial Vehicle UAV to ground stations. In a set of field experiments, it records the Received Signal Strength Indicator RSSI and measure the raw link-layer throughput for various antenna orientations, communication distances and ground-station elevations. By comparing the...
- White papers 2006-10-10
- Modeling TCP Throughput Over Wired/Wireless Heterogeneous Networks for Receiver-Based ACK Splitting Mechanism
- Recently, heterogeneous networks with wired and wireless links are becoming common. However, the performance of TCP data transmission deteriorates significantly over such networks because of packet losses caused by the high bit error rate of wireless links. The paper had proposed receiver-based ACK splitting mechanism to solve that problem previously....
- White papers 2006-04-22
- Performance Analysis and Optimization of TCP Over Adaptive Wireless Links
- This paper proposes an analytical framework for performance evaluation of TCP Transport Control Protocol over adaptive wireless links. Specifically, it includes adaptation of power, modulation format and error recovery strategy, and incorporate some features of wireless fading channels. This framework is then used to pursue joint optimization through maximization of...
- White papers 2006-03-17
- Mp3Player for Nokia Communicator 3.52 (Mobile)
- Mp3Player is an MPEG Layer 3 audio player for Nokia 9300/9500.Features:- English, German, Spanish, Hungarian;- plays MP3 files (MPEG-1, MPEG-2, MPEG-2.5, ABR, VBR);- playlist shows all MP3 files on phone, organized into folders;- displays artist, title (ID3v1, v2), bitrate, frequency and mono/stereo;- volume control;- displays time elapsed and the length...
- Software downloads 2005-11-18
- Optimized Video-Streaming Over 802.11 by Cross-Layer Signaling
- Seamless video streaming over wireless links imposes strong demands on video codecs and the underlying network. It is not sufficient that only the video codec or only the radio adapts to changes in the wireless link quality; efforts should be applied in both layers, and - if possible - synchronized....
- White papers 2005-09-09
- Wireless Link Test 1.1 (Mac)
- This is a small Java-based utility that permits the measurement of signal strength and noise on wireless links between an Airport Base Station and the wireless hosts associated to it, permitting the selection of the specific wireless host whose link is to be tested and displaying bar graphs of signal...
- Software downloads 2001-05-09
- From Idea to Implementation – How to Successfully Deploy a Wireless LAN
- The performance and capacity of a wireless LAN are impacted by many factors – ranging from 802.11 issues to physical wireless link quality and amount and type of traffic generated at the application layer. In this white paper, you'll learn key issues and factors to consider when planning a WLAN...
- White papers
- Expected Data Rate: An Accurate High-Throughput Path Metric for Multi-Hop Wireless Routing
- 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...
- White papers
- A Strategy to Manage Cache Consistency in a Distributed Mobile Wireless Environment
- Mobile computing environments are characterized by slow wireless links and relatively underprivileged hosts with limited battery powers, predisposed to frequent disconnections. Caching data at the Mobile Hosts MHs in a wireless network helps alleviate problems associated with slow, limited bandwidth wireless links, by reducing latency and conserving bandwidth. Battery power...
- White papers
Additional Resources
- HP Pavilion dv4-2045dx
- Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.The HP Pavilion dv4-2045dx offers more multitasking muscle than many of the other mainstream budget retail laptops we've recently reviewed. Helped by a 7,200rpm...
- Product reviews 2009-11-24
- Asus Essentio CG5270-BP004
- Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores. The Asus Essentio CG5270-BP004 bears a striking resemblance to a young teenager trying too hard. With its oversized, canted case, it's easy to...
- Product reviews 2009-11-24
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