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» Random Access Systems with a Time Varying Channel
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SIAMAM
2000
81views more  SIAMAM 2000»
13 years 10 months ago
Electrodiffusion Model of Rectangular Current Pulses in Ionic Channels of Cellular Membranes
A simplified electrodiffusion model for rectangular current pulses in ionic channels of biological membranes is presented. Numerical simulations and a dynamical systems analysis of...
Carl L. Gardner, Joseph W. Jerome, Robert S. Eisen...
VTC
2006
IEEE
125views Communications» more  VTC 2006»
14 years 4 months ago
A Carrier Interferometry based Channel Estimation Technique for One-Cell Reuse MIMO-OFDM/TDMA Cellular Systems
Abstract— This paper propose a channel estimation technique for multiple-input multiple-output (MIMO) - orthogonal frequency division multiplexing (OFDM) / time division multiple...
Kazunari Yokomakura, Seiichi Sampei, Hiroshi Harad...
TCOM
2008
115views more  TCOM 2008»
13 years 10 months ago
Differentiated rate scheduling for the down-link of cellular systems
We consider the problem of differentiated rate scheduling for the downlink (i.e., multi-antenna broadcast channel), in the sense that the rates required by different users must sat...
Amir F. Dana, Masoud Sharif, Ali Vakili, Babak Has...
ETT
2006
79views Education» more  ETT 2006»
13 years 11 months ago
On time-varying cyclic delay diversity
: Cyclic Delay Diversity (CDD) was introduced in 2001 to obtain spatial diversity in an Orthogonal Division Multiplexing (OFDM) based transmission system. In contrast to Space-Time...
Gerd Richter, Martin Bossert, Elena Costa, Martin ...
CRYPTO
1994
Springer
104views Cryptology» more  CRYPTO 1994»
14 years 3 months ago
Cryptographic Randomness from Air Turbulence in Disk Drives
Abstract. A computer disk drive's motor speed varies slightly but irregularly, principally because of air turbulence inside the disk's enclosure. The unpredictability of ...
Don Davis, Ross Ihaka, Philip Fenstermacher