Now showing items 1-10 of 33
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 ...
On Limits of Antenna Packing in Low Power Systems
We evaluate spectral efficiency limits of low power portable communication devices which are only constrained by fixed transceiver aperture G "subset&equal" real<sup>3</sup> for mounting antennas. A new notion of ...
Finite Rate Feedback Design for Multiple Transmit Antennas
Many practical systems employ a feedback channel to convey the channel state information to the transmitter.The capacity of the feedback channels is usually limited to a few bits per frame. We design feedback based ...
A Hardware Testbed for the Implementation and Evaluation of MIMO Algorithms
As the demand for higher performance wireless communications continues to grow, novel algorithms have been developed which provide increased performance and efficiency. One such class of algorithms involves the use of ...
An FPGA Implementation Of Alamouti's Transmit Diversity Technique
This paper presents the FPGA implementation of a multiple antenna wireless communications system based on Alamouti's transmit diversity scheme. Alamouti's transmit diversty scheme is a space-time block code with support ...
Design of the Transit Access Point Hardware Platform
Our objective is to design, analyze, prototype and experimentally study the theoretical underpinnings for a wireless internet that simultaneously achieves deployability, scalability, high performance and a cost-effective ...
Achievable Diversity and Multiplexing in Multiple Antenna Systems with Quantized Power Control
We consider a multiple antenna system with finite rate feedback, in which the quantized channel state information at the transmitter is used solely for temporal power control. We show that similar to systems without feedback, ...
Channel Equalization Algorithms for MIMO Downlink and ASIP Architectures
Processors for mobile handsets in 3G cellular systems require: high speed, flexibility and low power dissipation. While computationally efficient, ASIC processors are often not flexible enough to support necessary ...
Wireless @ Wired Speeds
This is a poster from the first 100x100 project meeting. It outlines some basic concepts in MIMO algorithm and system design at a relatively high, accessible level.
FFT-Accelerated Iterative MIMO Chip Equalizer Architecture For CDMA Downlink
In this paper, we present a novel FFT-accelerated iterative Linear MMSE chip equalizer in the MIMO CDMA downlink receiver. The reversed form time-domain matrix multiplication in the Conjugate Gradient iteration is accelerated ...