interference

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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!

Tags: Audio, Apple Macintosh, Interference, Desktops, Telecommunications, Hardware

Software downloads 2008-06-28

NAB "spindoctoring" on whitespace

Last month, the FCC rejected a proposal backed by Microsoft, Dell and Google that would have used "white space" spectrum to provide Internet service at speeds between 50-100 mbps. White space is purposefully unused spectrum that exists to prevent interference between broadcasting channels. It's on interference grounds that the FCC...

Tags: Internet, Interference, Broadcasting, TV, Spectrum, Broadcaster, John Carroll

Blog posts 2007-09-12

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...

Tags: Interference, University Of British Columbia, Analysis, WiMAX, Ultrawideband (UWB), Wi-Fi, Wireless And Mobility

White papers 2007-04-17

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....

Tags: Strategy, Mobile, Sir, Interference, Engineering, Advertising & Promotion, Wi-Fi, Wireless, Marketing

White papers 2007-03-28

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...

Tags: Farpoint Group, Interference, WLAN, Wireless LANs, LANs, Wi-Fi, Wireless And Mobility, Networking

White papers 2007-02-01

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...

Tags: Interference, TCP, Tcp/Ip, Networking

White papers 2007-01-01

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...

Tags: Aware, Interference, Mesh Networking, Networking

White papers 2006-09-25

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...

Tags: Interference, WLAN, Wireless LANs, LANs, Wi-Fi, Wireless, Networking

White papers 2006-09-01

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....

Tags: Aware, Router, Interference, Mesh Networking, Routers & Switches, Networking, Network Technology, Wi-Fi, Wireless

White papers 2006-04-23

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...

Tags: Bit Error Rate, Performance, Interference, Analysis, Packet Error Probability, Simulation Result, Bluetooth, Performance Management, Wi-Fi, Wireless, Human Resources, Workforce Management

White papers 2005-09-20

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...

Tags: Aware, Network, Wireless Sensor Network, Topology, Interference, Wireless, Illinois Institute Of Technology, Engineering, Wi-Fi, Wireless And Mobility

White papers 2005-07-06

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...

Tags: IEEE 802.11, Interference, Modeling, Wi-Fi, Performance Management, Research & Development, Wireless, Wireless LANs, Bluetooth, Human Resources, Workforce Management, Business Operations

White papers 2004-09-20

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...

Tags: Interference, Ottisoft, Microsoft Windows, Operating Systems, Software

Software downloads 2002-02-04

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....

Tags: Interference, GSM, Cellular Phones, Advertising & Promotion, Consumer Electronics, Personal Technology, Marketing

White papers

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...

Tags: Channel, Interference, Analysis, University Of Hannover, OFDM, Advertising & Promotion, Wireless, Marketing

White papers

Additional Resources

Pipe2CAD 2.11 (Windows)

After finishing the hydraulic design of your pipe networks with any of the available hydraulic design packages, networks can be easily imported into Pipe2CAD environment to proceed with all subsequent design steps. From checking interference points and conflict between different networks, verification of high and low points in pressure networks,...

Tags: Network, Microsoft Windows, Pipe2CAD, Networking

Software downloads 2009-11-20

iFrogz Ear Pollution Timbre earphones - light

Editors' note: The Timbre earphones without the mic have been updated to reflect a slightly higher score because they do not suffer from the cut-out and static issues that the persisted with some MP3 players when using the version with the mic.Speakers made for home audio setups are encased in...

Tags: Digital music, Digital media, cord, iFrogz, Ear Pollution Timbre, microphone, speaker

Product reviews 2009-11-13

iFrogz Ear Pollution Timbre earphones - dark

Editors' note: The Timbre earphones without the mic have been updated to reflect a slightly higher score because they do not suffer from the cut-out and static issues that the persisted with some MP3 players when using the version with the mic.Speakers made for home audio setups are encased in...

Tags: Digital music, Digital media, iFrogz, cord, Ear Pollution Timbre, microphone, speaker

Product reviews 2009-11-13

Boston Acoustics Duo-i plus

Editors' note: The Boston Acoustics Duo-i Plus is nearly identical to the Horizon Duo-i we reviewed a year ago. Not a lot has changed since then aside from the addition of full support for iPhone playback. While the Horizon Duo-i worked with the iPhone, the device had...

Tags: Digital music, Digital media, Boston Acoustics Inc., Apple iPod

Product reviews 2009-11-13

Nokia 3711 - sable (T-Mobile)

Nokia fans in the United States don't get many breaks. Few of the company's phones make it to U.S. carriers and the models that land here tend to be basic handsets for making calls. The Nokia 3711 for T-Mobile is one such phone. Simple in form and function, the 3711...

Tags: Telecom & Utilities, T-Mobile, phone, Nokia Corp., keypad button

Product reviews 2009-11-10