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New grid based test bed environment for carrying out ad-hoc networking experiments

Author: Johnson, D ; Kaka, Y ; Hay, J Date: Sep 2006 To profile the performance of an ad-hoc networking protocol, three possible methods can be applied. The first is to develop a mathematical model for the expected performance, the second is to run a series of computer simulations on the protocols ... Read more
Novel IQ imbalance and offset compensation techniques for quadrature mixing radio transceivers

Author: De Witt, JJ ; Van Rooyen, GJ Date: Sep 2006 Despite the advantages that quadrature mixing offers to radio front-ends, its practical use has been limited due to its sensitivity towards gain and phase mismatches between its in-phase and quadrature channels. DC offsets are also a problem ... Read more
Super-Orthogonal space-time trellis codes for virtual antenna arrays

Author: Sokoya, OA ; Xu, H ; Takawira, F Date: Sep 2006 This paper investigates the performance of super-orthogonal space time trellis codes when Virtual Antenna Arrays (VAA) is employed. The concept of virtual antenna arrays was developed to emulate Multiple-Input Multiple-Output (MIMO) schemes ... Read more

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Browsing by Subject "SATNAC"

Browsing by Subject "SATNAC"

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