Now showing items 1-10 of 31
Laser spectroscopic trace chemical sensors for environmental sensor networks and portable medical devices
This thesis represents the development of the first laser spectroscopy based trace-gas sensors with sensor characteristics which simultaneously satisfy low cost, handheld footprint, low power, and long term autonomous ...
Reducing dynamic power consumption in next generation DS-CDMA mobile communication receivers
(Inderscience Enterprises Ltd., 2008-09-01)
Reduction of the power consumption in portable wireless receivers is important for cellular systems, including UMTS and IMT2000. This paper explores the architectural design-space and methodologies for reducing the dynamic ...
The Effect of Preprocessing to the Complexity of List Sphere Detector Algorithms
A list sphere detector (LSD) is an enhancement of a sphere detector (SD) that can be used to approximate the soft output MAP detector used in the detection of the multiple-input multiple-output (MIMO) signals. The LSD ...
PhD Thesis LaTeX template 2008
This item contains a set of template latex files for the PhD thesis at Rice University.
Sphere detection and LDPC decoding algorithms and architectures for wireless systems
Ever increasing demand for high data rate wireless transmissions with high spectral efficiency leads to utilization of communication systems with multiple transmit and receive antennas. In addition, excellent error-rate ...
Cooperative communication over two-way channels
In this thesis, we define and analyze communication scenarios in which the source and destination cooperate across noncoherent two-way fading channels. As in practical communication systems, we constrain the bandwidth and ...
Symbol timing synchronization for OFDM-based WLAN systems
In this work, we address the problem of symbol timing synchronization for Orthogonal Frequency Division Multiplexing (OFDM) WLAN systems. OFDM systems are known to be sensitive to synchronization errors and improving the ...
Compressed Sensing for Imaging Applications
Compressed sensing is a new sampling theory which allows reconstructing signals using sub-Nyquist measurements. This can significantly reduce the computation required for both image and video whether during acquisition ...
Antenna Packing in Low Power Systems: Communication Limits and Array Design
In this paper, we study design of transceiver antenna arrays and its impact on spectral efficiency of low-power systems. Our primary motivation is construction of practical and portable multi-antenna configurations with a ...
Flex-Sphere: An FPGA Configurable Sort-Free Sphere Detector For Multi-user MIMO Wireless Systems
(SDR Forum, 2008-10-01)
Spatial division multiplexing (SDM) in MIMO technology significantly increases the spectral efficiency, and hence capacity, of a wireless communication system: it is a core component of the next generation wireless systems, ...