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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]
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]
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 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 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]
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]
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]
The Effect of Virtualization on OS Interference
White Papers This paper evaluates the impact of virtualization technology on the degree of operating system interference experienced by high-performance computing applications. The paper uses a simple micro-benchmark to compare the operating system interference...
[April 1, 2007, 1:00]
Clustered OFDM With Adaptive Antenna Arrays for Interference Suppression
White Papers This paper investigates clustered OFDM with adaptive antenna arrays for interference suppression. To calculate weights for interference suppression, instantaneous correlations of the received signals and channel responses corresponding to the...
[April 13, 2007, 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]
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]
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]
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]
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]
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]
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]
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]
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]
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]
