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IWCMC
2006
ACM
16 years 23 days ago
Uplink capacity comparison of non-perfect frequency synchronized cellular OFDM systems
Orthogonal frequency division multiplexing (OFDM) is very sensitive to frequency offsets which result in considerable interference. Performance of the system will be exacerbated ...
Shameem Kabir Chaudhury, Hrishikesh Venkataraman, ...
IWCMC
2006
ACM
16 years 23 days ago
Low complexity virtual antenna arrays using cooperative relay selection
We study the diversity-multiplexing tradeoff in cooperative diversity systems involving multiple relays. We focus on low complexity architectures that do not require simultaneous...
Aggelos Bletsas, Ashish Khisti, Moe Z. Win
MOBIWAC
2006
ACM
16 years 23 days ago
Quick convergecast in ZigBee/IEEE 802.15.4 tree-based wireless sensor networks
Convergecast is a fundamental operation in wireless sensor networks. Existing convergecast solutions have focused on reducing latency and energy consumption. However, a good desig...
Yu-Chee Tseng, Meng-Shiuan Pan
NORDICHI
2006
ACM
16 years 23 days ago
SoundBar: exploiting multiple views in multimodal graph browsing
In this paper we discuss why access to mathematical graphs is problematic for visually impaired people. By a review of graph understanding theory and interviews with visually impa...
David K. McGookin, Stephen A. Brewster
NSPW
2006
ACM
16 years 23 days ago
PKI design for the real world
What would a PKI look like if it were designed for implementability and deployability rather than strict adherence to a particular theoretical or mathematical model? This paper pr...
Peter Gutmann