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interference (18 results)
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- 802.11n: MIMO really needs smart antennas
- As Wi-Fi standards go, 802.11n has a lot to live up to, especially after hearing how 802.11n's advertised throughput, security, and reliability will allow Wi-Fi to replace existing wired networks. This means 802.11n's RF technology needs to be rock-solid, just like Ethernet cables, while facing ever-changing environmental conditions. ...
- Blog posts 2008-05-14
- WiMAX Interference to MB-OFDM UWB Systems
- This paper presents an analysis of the performance of the Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) system for Ultra Wideband UWB communication in the presence of interference from a single-carrier IEEE 802.16 WiMAX system operating in the 3.5 GHz band. The intent of the analysis is to provide theoretical justification...
- White papers 2007-04-17
- Interference-Aware Topology Control for Wireless Sensor Networks
- Topology control has been well studied in wireless ad hoc networks. However, only a few topology control methods take into account the low interference as a goal of the methods. Some researchers tried to indirectly reduce the interference by reducing the transmission power or by devising low degree topologies, but...
- White papers 2005-07-06
- Interference 1.0 (Windows)
- Simulate the interference between two circular waves, for instance surface waves on water. A good supplement to experiments with a ripple tank. Vary wave source separation, wavelength and phases. Create a 2D or 3D stationary pattern or an animation. Study how the waves interact to build the interference pattern. 5...
- Software downloads 2002-02-04
- Text to Audio File 1.1 (Mac)
- This app creates small AIFF files out of the text you give it. It uses Leopard’s new realistic human-like voice to create rich, uninterrupted audio files. The files are created without any interference whatsoever! Great for making homemade audiobooks, recorded recitations, and much more!
- Software downloads 2008-06-28
- Exploring the Effect of Inter-Flow Interference on TCP Performance in MANETs
- Research efforts in MANETs have concentrated on smoothing TCP incompatibilities with the IEEE 802.11 protocol due to the degrading effects of hidden terminals caused by transmission interference. Previous studies which have focused on solutions at the transport layer, have analysed the behaviour of single or isolated TCP flows and thus...
- White papers 2007-01-01
- Optimal SIR-Based Power Control Strategies for Wireless CDMA Networks
- One aspect of the wireless communications power control problem that has received little attention is the designs of control algorithms that explicitly consider the tradeoff between the costs of transmit power and SIR error. This paper proposes a novel optimal control algorithm for distributed power control in cellular communication systems....
- White papers 2007-03-28
- Interference-Aware Channel Assignment in Multi-Radio Wireless Mesh Networks
- The capacity problem in wireless mesh networks can be alleviated by equipping the mesh routers with multiple radios tuned to non-overlapping channels. However, channel assignment presents a challenge because co-located wireless networks are likely to be tuned to the same channels. The resulting increase in interference can adversely affect performance....
- White papers 2006-04-23
- Efficient Interference-Aware TDMA Link Scheduling for Static Wireless Networks
- This paper studies efficient link scheduling for a multihop wireless network to maximize its throughput. Efficient link scheduling can greatly reduce the interference effect of close-by transmissions. Unlike the previous studies that often assume a unit disk graph model, the paper assumes that different terminals could have different transmission ranges...
- White papers 2006-09-26
- The Invisible Threat: Interference and Wireless LANs
- Interference is a fact of life in the unlicensed bands used by Wireless LANs WLANs, and is an increasing challenge in all WLAN environments - the enterprise, outdoors (including metro-scale Wi-Fi meshes), and in the residence. As the number of unlicensed devices grows and as ever more mission-critical applications are...
- White papers 2006-10-01
- Interference and Metro-Scale Wi-Fi Mesh Networks
- Farpoint Group has been performing detailed studies of the effects of interference on Wi-Fi-based Wireless LANs WLANs for much of the past year. The focus has been on exploring the nature of interference from a variety of angles, and a variety of traffic types, including general traffic, streaming video over...
- White papers 2007-02-01
- Evaluating Interference in Wireless LANs: Recommend Practice
- Radio interference remains a core concern among Wireless LAN WLAN users, network administrators, and operations staff alike. After all, the potential for interference is a fact of life in the unlicensed bands where WLANs operate, and, even worse, it is often very difficult to evaluate the effects of interference on...
- White papers 2006-09-01
- Interference Aware Routing in Multi-Radio Wireless Mesh Networks
- This paper addresses the problem of interference aware routing in multi-radio infrastructure mesh networks wherein each mesh node is equipped with multiple radio interfaces and a subset of nodes serve as Internet gateways. The paper presents a new interference aware routing metric - iAWARE that aids in finding paths that...
- White papers 2006-09-25
- RF Interference in Home Networks
- Interference can lead to performance reduction of wireless devices. This paper points out the different types of interference on a Bluetooth device and introduces a possible solution to prevent interference. The new solution is a software implementation which requires no hardware adjustments. After simulation some points of improvements are found...
- White papers 2005-06-01
- Assigning Frequencies in GSM Networks
- Mobile communication is a key technology in today's information age. Despite the ongoing improvements in equipment design, interference remains a limiting factor for the use of radio communication. This paper investigates how to largely prevent interference in GSM networks by carefully assigning the available frequencies to the installed base stations....
- White papers
- Performance Analysis of Bluetooth Piconets Under Mutual Interference Using Bit Error Rate
- In this paper, the performance of the Bluetooth piconets under the mutual interference is analyzed. As a performance measure, the packet error probability PEP is used. The PEP is obtained from the bit error rate BER and the collision length of packet. Not only the hit probability but also the...
- White papers 2005-09-20
- Modeling and Simulation of IEEE 802.11 Wireless-LAN and Bluetooth Piconet Range Interference
- The proximity of wireless devices with one another often results in interference in the unlicensed 2.4 GHz ISM bandwidth. Interference has been recognized as a major problem to wireless network performance and improvement. This paper reports a proposed and investigated Interference Range Model IRM, a model that allows a user...
- White papers 2004-09-20
- Intercarrier and Intersymbol Interference Analysis of OFDM Systems on Time-Varying Channels
- In intersymbol interference ISI and intercarrier interference ICI for OFDM systems with insufficient guard length was analyzed in the case of time-invariant radio channels. This was carried out by truncating the channel impulse response CIR in mathematical analysis into two parts, the so-called truncated channels. The same technique is used...
- White papers
Additional Resources
- Wireless interference in healthcare is real but manageable
- By Kenneth KleinbergElectromagnetic interference between electronic transmitting devices and medical equipment is a small but growing problem that healthcare organizations HCOs should not ignore. Although few facilities will be able to develop their own leading-edge expertise in detecting and reporting such problems, all HCOs should become familiar with and implement...
- Technical articles 2003-04-21
- RF interference: Just how important are antennas
- Once again another Good Article.- You just keep them comming, don't you? Well I, for one, am glad of it. While most of that is still above my head, I just don't have enough time, or the the reason, anymore, I still learn from your articles. It's good that's there's...
- Discussion threads 2008-06-15
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