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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 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 Management for Medium Access Control in CDMA Underwater Acoustic Sensor Networks
White Papers While several works have considered the problems of allocation of code and transmission power separately, this paper, proposes a receiver-centric interference management approach for joint code/power assignment for MAC in CDMA UASNs.
[April 15, 2009, 1:22]
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]
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]
Interference and Metro-Scale Wi-Fi Mesh Networks
White Papers 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...
[March 2, 2009, 2:01]
Measurement-Based Models of Delivery and Interference in Static Wireless Networks
White Papers This paper presents practical models for the physical layer behaviors of packet reception and carrier sense with interference in static wireless networks. These models use measurements of a real network rather than abstract RF propagation models as...
[May 23, 2007, 1:00]
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]
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]
Capacity Gains of Single Antenna Interference Cancellation in GSM
White Papers Single Antenna Interference Cancellation (SAIC) is a very interesting and promising technology currently being standardized in 3GPP as part of GERAN Release 6. This interference reduction technique takes advantage of the latest developments in...
[November 29, 2005, 0:00]
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]
Analysis of the Impact of WiMAX-OFDM Interference on Multiband OFDM
White Papers 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 an IEEE 802.16 WiMAXOFDM system operating...
[April 23, 2009, 1:24]
Multiuser Interference Cancellation for OFDM Systems With Frequency Offset
White Papers The multiple access interference is reduced by reconstructing and removing the interfering signals. This paper proposes a method to counteract the effect of different frequency offsets of the users in a OFDMA uplink system with frequency selective...
[March 30, 2005, 3:00]
Performance Analysis of Bluetooth Piconets Under Mutual Interference Using Bit Error Rate
White Papers In this paper, the performance of the Bluetooth piconets under the mutual interference is analyzed. Not only the hit probability but also the signal-to-interference ratio (SIR) is considered for the analysis.
[November 11, 2005, 0:00]
An Adaptive Space-Time DFE Combined With Successive Interference Cancellation
White Papers At high data rates the InterSymbol Interference (ISI) induced by dispersive channels becomes a technological bottleneck. Then one proposes an algorithm for Space Division Multiple Access (SDMA) in the uplink based on a combination of adaptive space...
[December 8, 2009, 23:00]
Iterative Interference Cancellation and Channel Estimation for Mobile OFDM
White Papers This causes InterCarrier Interference (ICI) and increases inaccuracies in channel tracking. In mobile reception, the reliability of Orthogonal Frequency Division Multiplexing (OFDM) is limited because of the time-varying nature of the channel.
[August 31, 2009, 1:22]
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]
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]
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]
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]
