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Significant throughput gains can be achieved in a multi-user MIMO (MU-MIMO) wireless system by exploiting the combination of multi-user scheduling and multi-user diversity. Open-loop MU-MIMO (OL-MU-MIMO) is a codebook based precoding technique where precoders are fixed a priori at the base station (BS) in a known fashion and the user needs to feedback which precoding vector is to be chosen referred...
In this paper, we propose methods for joint design of source relay precoders that optimize the performance of two-way amplify and forward (AF) multiple input multiple output (MIMO) relay systems. In particular, we propose three iterative methods to optimize the system performance. The design criteria we consider in this paper are, the conventional Arithmetic sum of average Mean Square Error (AMSE)...
One of the key elements of the data integration process is conflation of spatial data from two different sources, which results in a single data set that incorporates data and attributes from both sources. Registration techniques needed for conflation can be rigid or non-rigid, depending on the underlying transformation. A key characteristic of rigid transformation is that all distances are preserved.
A fully integrated receiver front-end circuit for a 4:1 time division multiplexing of RF signals from an antenna array is introduced. The switching necessary for multiplexing is implemented as an array of low noise amplifiers operating at 2.4 GHz with selectable outputs. The circuit includes on-chip input and output matching networks. A digital controller for rotating through the amplifier inputs...
Low-delay video coding is a key technology for video conferencing as well as upcoming remote-monitoring and automotive video applications like rear-view cameras or night vision systems. As the ongoing progress in programmable DSP and ASIC technology allows cost effective and flexible implementations of the necessary hardware, compressed video transmission systems over multimedia busses will soon replace...
The "tongue drive" system is a tongue-operated assistive technology developed for people with severe disability to control their environment. The tongue is considered an excellent appendage in severely disabled people for operating an assistive device. Tongue Drive consists of an array of Hall-effect magnetic sensors mounted on a dental retainer on the outer side of the teeth to measure...
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