Browsing George R. Brown School of Engineering by Title
Now showing items 13391358 of 2128

On Limits of Antenna Packing in Low Power Systems
(20040901)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 ... 
On Multipath Channel Estimation for CDMA Systems Using Multiple Sensors
(20010320)This paper focuses on the design of a multiuser receiver structure for the reverse link of a codedivision multipleaccess communication system, in the presence of multipath effects and using an antenna array at the base ... 
On Nearly Orthogonal Lattice Bases
(20050701)We study "nearly orthogonal" lattice bases, or bases where the angle between any basis vector and the linear subspace spanned by the other basis vectors is greater than 60°. We show that a nearly orthogonal lattice ... 
On Outage and Capacity for Orthogonal Transmit Diversity
(20010920)Assuming that only the receiver has perfect channel state information, we analyze the orthogonal transmit diversity (OTD). First, we consider the case of fast fading or <i>ergodic</i> channels. We demonstrate that for a ... 
On Power Control with Finite Rate Feedback for Cooperative Relay Networks
(20040301)Power control strategies with finite rate feedback are studied for the cooperative channel. The main contribution of this paper is to show that quantized feedback information can lead to significant reduction in outage ... 
ON REALIZATION OF DIGITAL FILTERS
(1974) 
On the application of graphics processor to wireless receiver design
(2010)In many wireless systems, a Turbo decoder is often combined with a softoutput multipleinput and multipleoutput (MIMO) detector at the receiver to maximize performance in many 4G and beyond wireless standards. Although ... 
On the Asymptotic Performance of Multiple Antenna Channels with Fast Channel Feedback
(20051001)In this paper, we analyze the asymptotic performance of multiple antenna channels where the transmitter has either perfect or finite bit channel state information. Using the diversitymultiplexing tradeoff to characterize ... 
On the Capacity of `Cheap' Relay Networks
(20030420)We consider the communication problem in a multihop relay network where the intermediate relay nodes cannot transmit and receive at the same time. The motivation for this assumption comes from the fact that current radios ... 
On the capacity of infinite population random multiple access collision channels
(1991)The task of controlling the access to a shared communication medium is addressed. More specifically, the problem of finding the control strategy which maximizes the throughput is considered for the infinite population ... 
On the Complexity of Vector Searching
(19780620)The vector searching problem is, given kvector A (a kvector) is a vector that has k components, over the integers) and given a set B of n distinct kvectors, to determine whether or not A is a member of set B. Comparisons ... 

On the Correlation Structure of Multiplicity M Scaling Functions and Wavelets
(19920115)In this paper we study the autocorrelation and crosscorrelation structure of the scaling and wavelet functions associated with compactly supported orthonormal wavelet basis. These correlation structures play an important ... 
On the Design of LP IIR Filters with Arbitrary Frequency Response
(20010501)This paper introduces an iterative algorithm for designing IIR digital filters that minimize a complex approximation error in an Lp sense. The algorithm combines ideas that have proven successful in the similar problem ... 
On the development of objective metrics for surgical skills evaluation based on tool motion
(2014)A key competency requirement in endovascular surgery is to optimally visualize and utilize preshaped catheters to navigate complex vascular anatomy, yet current performance assessment techniques are limited to grading ... 
On the Equivalence of the Operator and Kernel Methods for Joint Distributions of Arbitrary Variables
(19970420)Generalizing the concept of timefrequency representations, Cohen has recently proposed a general method, based on operator correspondence rules, for generating joint distributions of arbitrary variables. As an alternative ...