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Modeling And Simulation Of IEEE 802.11 Wireless-LAN And Bluetooth Piconet Range Interference
White Papers 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.
[August 11, 2005, 6:00]
A Comparison Between Collaborative And Non-Collaborative Coexistence Mechanisms For Interference Mitigation In ISM Bands
White Papers This paper deals with the problem of mutual interference between IEEE 802.11 WLANs (Wireless Local Area Networks) and short-range radio systems based on the Bluetooth technology, or equivalently, IEEE 802.15 WPANs (Wireless Personal Area Networks).
[July 1, 2004, 3:00]
Interference Evaluation Of Bluetooth And IEEE 802.11b Systems
White Papers The emergence of several radio technologies, such as Bluetooth and IEEE 802.11, operating in the 2.4 GHz unlicensed ISM frequency band, may lead to signal interference and result in significant performance degradation when devices are collocated...
[November 22, 2005, 0:00]
Exploring The Effect Of Inter-Flow Interference On TCP Performance In MANETs
White Papers 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...
[December 20, 2007, 0:01]
The Effect Of Disengaging RTS/CTS Dialogue In IEEE 802.11 MAC Protocol
White Papers This paper studies the effect of using or disengaging the RTS/CTS dialogue in IEEE 802.11 DCF MAC protocol incorporating the realistic condition under which carrier sensing, transmission and interference ranges are distinctively different.
[May 12, 2006, 1:00]
Interference-Aware Topology Control And QoS Routing In Multi-Channel Wireless Mesh Networks
White Papers This paper studies interference-aware topology control and QoS routing in IEEE 802.11-based multi-channel wireless mesh networks with dynamic traffic. The throughput of wireless networks can be significantly improved by multi-channel communications...
[July 14, 2008, 1:21]
Enhancements Of The IEEE 802.11, A MAC Protocol For Ad Hoc Network With History Of Power Adjustment
White Papers Through many simulations, it shows that the algorithm outperforms the IEEE 802.11 standard both in the static and dynamic network and also in high interference environments. This paper proposes a MAC protocol which improves disadvantages of the...
[March 25, 2008, 8:57]
Optimal Communication In Bluetooth Piconets
White Papers Thus, the frequencies in this band will be subjected to interference from other sources in addition to being subjected to the vagaries of wireless links. Bluetooth uses frequency hopping and operates in the unlicensed 2.4-GHz ISM band, which is...
[August 12, 2005, 6:00]
Interference Aware Bluetooth Packet Scheduling
White Papers Since both Bluetooth and IEEE 802.11 devices use the same frequency band and may likely come together in a laptop or may be close together at a desktop, interference may lead to significant performance degradation.
[November 11, 2005, 0:00]
Expected Data Rate: An Accurate High-Throughput Path Metric For Multi-Hop Wireless Routing
White Papers The transmission interference model also takes the non-optimality of IEEE 802.11 medium access scheduling into account. The metric is based upon a new model for transmission interference which is a critical factor in determining path throughput.
[August 23, 2007, 1:00]
Achieving Scalable Performance In Large-Scale IEEE 802.11 Wireless Networks
White Papers This paper models interference types 1 and 2 in terms of a set of inequality constraints for the IEEE 802.11 CSMA/CA protocol. In large-scale wireless networks, interferences among nodes limit channel spatial re-use and are a main hurdle for...
[February 10, 2006, 0:01]
Is IEEE 802.11 Ready For VoIP?
White Papers This paper also discusses several other minor factors that could hinder VoWiFi deployment, such as network capacity, fairness, and interference susceptibility. This paper empirically explores voice communication over IEEE 802.11 networks (VoWiFi).
[May 31, 2007, 1:00]
Interference-Aware Channel Assignment In Multi-Radio Wireless Mesh Networks
White Papers The resulting increase in interference can adversely affect performance. This paper presents an interference-aware channel assignment algorithm and protocol for multi-radio wireless mesh networks that address this interference problem.
[August 13, 2007, 15:14]
Clustered CDMA Ad Hoc Networks Without Closed-Loop Power Control
White Papers Typically, CDMA networks require fine-tuned power control, but here that requirement is eliminated through a combination of open loop power control, user ordering, and successive interference cancellation (SIC).
[October 13, 2005, 3:00]
Spectrum Co-Existence Of IEEE 802.11b And 802.16a Networks Using The CSCC Etiquette Protocol
White Papers A specific method using the "CSCC" (Common Spectrum Coordination Channel) etiquette protocol is studied and compared with earlier results on reactive interference avoidance algorithms. This paper considers the feasibility of operating both IEEE...
[March 17, 2006, 0:01]
Bluetooth Dynamic Scheduling And Interference Mitigation
White Papers The main goal of this paper is to investigate the use of a dynamic scheduling algorithm that guarantees QoS while reducing the impact of interference. In addition to QOS support, another challenge for Bluetooth stems from having to share the 2.4...
[August 9, 2005, 6:00]
Joint Optimal Channel Assignment And Congestion Control For Multi-Channel Wireless Mesh Networks
White Papers This paper formulates the Joint Optimal Channel Assignment and Congestion Control (JOCAC) as a decentralized utility maximization problem with constraints that arise from the interference of the neighboring transmissions.
[May 19, 2006, 1:00]
Measurement-Based Wireless LAN Troubleshooting
White Papers These tools improve on existing mechanisms by analyzing link-layer sequence numbers, deducing link congestion based on retransmission traces and by detecting cross-channel interference based on observing sets of neighboring or overlapping channels...
[January 4, 2007, 19:55]
Bluetooth Exiled From LAN Of Hope And Glory
News A practical obstacle exists as well: Bluetooth and 802.11b use the same radio spectrum range, and not all the interference issues have been worked out, say experts. Both operate in the same spectrum, and there are interference issues that have to...
[April 5, 2001, 7:41]
Comdex 2001: The Battle Is On For Faster Wireless
News The 802.11a standard operates in the uncrowded 5GHz frequency, where interference is less of a problem. Texas Instruments executives, however, argue that it's more important to give consumers a speed boost that is compatible with 802.11b now...
[November 15, 2001, 12:02]
