transmission interference
Optimal Routing, Link Scheduling and Power Control in Multi-Hop Wireless Networks
White Paper Multi-access signal interference is explicitly modeled. First it address the problem of finding an optimal link scheduling and power control policy that minimizes the total average transmission power in the wireless multi-hop network, subject to... [11 Jul 2008]
Coexistence Issues in Cognitive Radios Based on Ultra-Wide Bandwidth Systems
White Paper Firstly, the paper proposes an analytical methodology to assess the interference impact and coexistence issues between NarrowBand (NB) and UWB communication systems in a realistic scenario. Then, based on this methodology the paper shows the great... [11 Jul 2008]
Ultra Wide Bandwidth Communications Towards Cognitive Radio
White Paper The paper then reviews some recent results concerning interference and coexistence between NarrowBand (NB) and UWB communication systems. Finally, it shows the great potential of the UWB technology in adapting the transmitted spectrum to counteract... [11 Jul 2008]
Performance Analysis of OFDM System Based on IEEE 802.11a
White Paper However, ISI (Inter-Symbol Interference), which is the severe problem in the case of the existence of multipath fading, can be occurred more frequently in high-speed multimedia data transmission. This paper analyzes the performance of OFDM system... [03 Jul 2008]
Google bigs up 'white space' wireless plans
News Page highlighted the benefits of making more spectrum available, while downplaying opposition from broadcasters and makers and users of wireless microphones, who fear the wireless devices would cause interference. [23 May 2008]
Soft Capacity Analysis of TDMA Systems With Slow-Frequency Hopping and Multiple-Beam Smart Antennas
White Paper Then, the interference reduction due to smart antennas, power control, and discontinuous transmission can be directly translated into capacity gain. Smart antenna is considered as one of the most effective means for enhancing wireless system capacity. [10 Apr 2008]
Simulative Performance Optimization for TCP Over UMTS
White Paper Generally, wireless networks have many different characteristics compared to fixed networks, as the radio signal is affected by fading, shadowing and interference that also change over time. Most of the future applications that make use of mobile... [14 Jan 2008]
Exploring the Effect of Inter-Flow Interference on TCP Performance in MANETs
White Paper 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... [19 Dec 2007]
Ofcom plots digital dividend free-for-all
News Cognitive radio devices are able to share spectrum with other services as they can detect when it's not being used and change their transmission or reception path to avoid interference. Ofcom is also proposing to allow a wireless technology known... [14 Dec 2007]
An Experimental Study of ARQ Protocol in 802.11b Wireless LAN
White Paper This paper also reports certain client interference phenomena which might not be obvious to theoretical and simulation studies. The results indicate that the link-layer ARQ is very effective in reducing packet losses due to medium noise and... [05 Dec 2007]
Cooperation, Competition and Cognition in Wireless Networks
White Paper Cooperation: silent transmitters/receivers can help active transmitters/receivers in the transmission/reception of their messages, but have to extract this message from the underlying transmission or by other methods, and Cognitive Radio... [03 Sep 2007]
Efficient Interference-Aware TDMA Link Scheduling for Static Wireless Networks
White Paper Unlike the previous studies that often assume a unit disk graph model, the paper assumes that different terminals could have different transmission ranges and different interference ranges. In the model, it is also possible that a communication... [31 Aug 2007]
The Hidden Cost of Overhead in MIMO Wireless LANs
White Paper Several different MIMO configurations including spatial multiplexing, concurrent transmit and receive beamforming, and receiver interference cancellation are compared in terms of their saturation throughput. [31 Aug 2007]
Latency-Sensitive Power Control for Wireless Ad-Hoc Networks
White Paper If transmission power is increased, interference increases, thus reducing network capacity. This paper investigates the impact of power control on latency in wireless ad-hoc networks. A node sending/relaying delay-sensitive real-time application... [31 Aug 2007]
On the Impact of Beamforming on Interference in Wireless Mesh Networks
White Paper For a wireless mesh network with randomly placed devices, the paper analyzes the impact of beamforming on the statistics of the signal attenuation, interference, and SIR between devices. This paper shows that simple random direction beamforming... [25 Aug 2007]
Keep updated for stories matching transmission interference via RSS
