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Interference Avoidance Dynamic Adaptive OFDM Using a Reconfigurable Radio Platform
White Papers The main focus of this work is the creation of a receiver-centric improved OFDM wireless transmission system that has reduced Bit Error Rate (BER) and increased channel capacity usage in interference-prone wireless bands.
[April 11, 2007, 1:01]
How to Outperform IEEE 802.11: Interference Aware (IA) MAC
White Papers This paper proposes Interference Aware (IA) MAC, a modified version of standard IEEE802.11. To make it feasible, the paper proposes to insert some information about interference and received power levels into IEEE 802.11 control packets.
[May 12, 2006, 0:00]
Interference Aware Routing in Multi-Radio Wireless Mesh Networks
White Papers 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.
[December 7, 2006, 0:00]
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]
Interference-Aware Topology Control for Wireless Sensor Networks
White Papers 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...
[April 23, 2009, 1:24]
Interference Mitigation Strategies for WiMAX Networks
White Papers Inter-cell interference is a key aspect that limits system level performances. On the other side, WiMAX standard provides several useful features at both PHY and MAC layer for facing propagation channel impairment and that can be exploited in order...
[April 22, 2009, 1:24]
Diversity, Interference Cancellation and Spatial Multiplexing in MIMO Mobile WiMAX Systems
White Papers This paper first discusses the tradeoffs between diversity, interference cancellation and spatial multiplexing in MIMO systems, and it compare Optimum Combining (OC), Maximum-Ratio Combining (MRC) and interference cancellation for different...
[April 23, 2009, 1:24]
The Effects of Adjacent Channel Rejection and Adjacent Channel Interference on 802.11 WLAN Performance
White Papers The escalating deployment of wireless networking technology as well as other wireless technologies in the same unlicensed spectrum is rapidly increasing the radio frequency (RF) interference for Wi-Fi (802.11) products, threatening the data...
[November 30, 2003, 21:36]
Optimum Signaling for MIMO-OFDM Systems With Interference
White Papers Numerical results show that using the optimum approach for cases without interference does not always achieve system capacity. Optimum signaling is studied for Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM...
[April 14, 2007, 1:01]
A Study of Frequency Interference and Indoor Location Sensing With 802.11b and Bluetooth Technologies
White Papers Since BT and WLAN don't get along very well, the paper presents experimental results of interference effect of one technology on the other. Several technologies such as infrared sensing, radio frequency, ultrasonic and RFIDs have been proposed for...
[July 9, 2007, 1:11]
Inter-Cell Interference Management in WiMAX Downlinks by a Stackelberg Game Between BSs
White Papers A game theoretic framework is developed for effective and adaptive inter-cell interference management in the OFDMA-based WiMAX/3GPP-LTE systems. Such approach requires no fixed spectrum planning beforehand and does not affect the spectrum usage for...
[April 22, 2009, 1:24]
Impact of Network Load on Forward Link Inter-Cell Interference in Cellular Data Networks
White Papers This paper studies the impact of network load in the neighboring sectors on the inter-cell interference in a cellular data network. Cellular data networks allow mobile terminals to access the Internet for data communication.
[June 16, 2006, 0:00]
Dynamic Association for Load Balancing and Interference Avoidance in Multi-Cell Networks
White Papers Even in such a next-generation system, boundary users would suffer from low throughput due to severe Inter-Cell Interference (ICI) and unbalanced user distributions among cells, unless additional schemes to mitigate this problem are employed.
[July 10, 2008, 1:01]
Intercarrier and Intersymbol Interference Analysis of OFDM Systems on Time-Varying Channels
White Papers 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...
[October 29, 2004, 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]
RF Interference in Home Networks
White Papers 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.
[November 22, 2005, 0:00]
Wi-Fi slowed by interference, not congestion
News Problems with Wi-Fi performance tend to be the result of interference from other devices using the same frequency, rather than mutual congestion between Wi-Fi users, an Ofcom-commissioned study has found.
[May 11, 2009, 17:14]
Impact of Interference and Capture Effects in 802.11 Wireless Networks on TCP
White Papers The focus of this paper is on one underlying source of packet erasure (non-congestion loss), namely interference in 802.11 environments (from Bluetooth and co-channel interferers), and the resulting interaction between the MAC and transport layer...
[November 8, 2006, 0:00]
20 Myths of Wi-Fi Interference: Dispel Myths to Gain High-Performing and Reliable Wireless
White Papers RF interference can be a major inhibitor to wireless performance, creating security vulnerabilities and wireless network instability. This paper exposes the top 20 most pervasive myths around wireless interference.
[June 12, 2008, 1:01]
Efficient Interference-Aware TDMA Link Scheduling for Static Wireless Networks
White Papers 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...
[August 10, 2007, 10:45]
