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Modal Analysis/Filtering To Estimate Time-Varying MIMO-OFDM Channels
White Papers Effective improvement of the channel estimate is obtained by estimating delay and angular modal spaces via modal analysis and by filtering the (original) least squares channel estimates as projection onto the modal spaces.
[October 21, 2004, 0:00]
A Detailed Description Of CBO's Cost Estimate For The Medicare Prescription Drug Benefit
White Papers The Congressional Budget Office (CBO) provided analysis to the Congress during its deliberations over the addition of an outpatient prescription drug benefit to Medicare and issued in July 2003 federal cost estimates for H.R.and S.1 as passed by...
[July 5, 2005, 0:00]
SCONE: A Tool To Estimate Shared Congestion Among Internet Paths
White Papers This paper proposes Shared CONgestion Estimator (SCONE), a tool that provides an estimate of shared congestion between two paths. SCONE sends probe flows along each of these paths and calculates the fraction of drops appearing in correlated bursts...
[May 25, 2007, 0:00]
Woodworkers Estimate Helper
Downloads Woodworkers Estimate Helper is a tool to assist in creating accurate price quotes for projects by taking you through a sequence of simple steps to calculate lumber, hardware, labor, and other costs. Woodworkers Estimate Helper will then calculate...
[April 28, 2005, 23:17]
On The Use Of PROC MIXED To Estimate Correlation In The Presence Of Repeated Measures
White Papers The need to assess correlation in settings where multiple measurements are available on each of the variables of interest arises often in biostatistical science. Although several ad hoc approaches can be used, they can easily lead to invalid...
[January 30, 2007, 23:00]
Caldera Loss Exceeds Estimate
News Linux software seller Caldera International reported a greater-than-expected loss on Wednesday, another sign of the sour investment climate surrounding the open-source operating system. For its second fiscal quarter, ended April 30, the company...
[June 7, 2001, 10:07]
How To Identify And Estimate The Largest Traffic Matrix Elements In A Dynamic Environment
White Papers A traffic matrix is a representation of the volume of traffic that flows between origin-destination (OD) node pairs in a communication network. In the context of the Internet, the nodes can represent Points-of-Presence (PoPs), routers or links.
[August 6, 2007, 0:00]
Confidence And Prediction Intervals For Neural Network Ensembles
White Papers In this paper we propose a new technique that uses the bootstrap to estimate confidence and prediction intervals for neural network regression ensembles Our proposed technique can be applied to any ensemble technique that uses the bootstrap to...
[October 16, 2003, 0:00]
A Third Of Net Users Hacked Or Infected
Talkback Is Edelman really basing their estimate on interviews with only 1,000 people? Did they actually base their estimate on .000002 (two hundred thousandths of 1 percent) ? The Net has over 500,000,000 people on it.
[August 13, 2003, 22:38]
Capacity Estimation Of SIR-Based Power Controlled CDMA Cellular Systems In Presence Of Power Control Error
White Papers Analytical models to estimate the uplink capacity for SIR-based power controlled CDMA cellular systems were recently developed in [1]-[2]. This paper shows how to develop an analytical model based on the method presented in [1] and [2] to estimate...
[July 25, 2004, 0:00]
Factor In The Productive Hours Per Day When Estimating Duration
Talkback If you were to estimate all tasks on the basis of the number hours effort to complete them, then Tom would have a valid (and pehaps obvious? However most project managers I know estimate on the basis of the number of days effort required to...
[April 28, 2006, 10:11]
Factor In The Productive Hours Per Day When Estimating Duration
News Before you can estimate duration, you must understand the effort hours associated with your project. As the project manager, should you estimate that the duration of the activity is one calendar week?
[April 26, 2006, 15:40]
What Is Computer-Aided Estimating?
White Papers Is it important to understand the strategies used to ‘build’ a computer-aided estimate? The industry neither has a standard definition for an estimate, nor standards by which to measure what an estimating program provides.
[March 5, 2004, 23:00]
IDC Raises Sales Estimates For 2004
News Researcher IDC has raised its estimate for the number of PCs that will be sold in 2004, saying it now expects sales of 176.5 million units, the company said on Monday. The year is expected to end with 14.2 percent growth, the company said, an...
[September 28, 2004, 10:00]
CBO's Method For Estimating Potential Output: An Update
White Papers The Congressional Budget Office's (CBO's) estimate of potential output plays an important role in its economic forecast. This paper describes the method that CBO uses to estimate past and present potential output and to make 10-year projections, as...
[July 12, 2005, 0:00]
IBM Talks Of 10,000 New Jobs
News IBM on Wednesday met analysts' average earnings estimate for the third quarter and said it saw the need for about 10,000 new jobs next year. Big Blue reported earnings per share from continuing operations of $1.02 (£0.61) up from 99 cents per share...
[October 16, 2003, 14:35]
Impulse Noise Mitigation For OFDM Using Decision Directed Noise Estimation
White Papers An estimate is made of the noise component in each received input sample. When the estimate is large enough to indicate that impulse noise is present in the sample, the estimated noise component is subtracted from the input sample before final...
[October 26, 2004, 0:00]
AMD To Cut 10 Percent Of Workforce
News AMD said on Monday it would cut 10 percent of its workforce, or about 1,680 jobs, and gave a first-quarter revenue estimate below expectations, sending its shares down as much as five percent. AMD's estimate would be a 22 percent rise in revenue...
[April 8, 2008, 8:33]
Pilot-Aided Channel Estimation For Systems With Virtual Carriers
White Papers As conventional estimators cannot estimate the Channel Transfer Function (CTF) at VCs, DFT-based estimators are not directly applicable in OFDM systems with VCs. To circumvent this, the authors present Least Squares (LS), Generalized Linear Minimum...
[April 11, 2007, 0:00]
Detrimental Effects Of Filtering In An OFDM System Using Pilot Based Channel Estimation
White Papers Pilots are used to estimate the combined response of the channel and the filters. By making use of standard Gaussian approximation to the interference for the AWGN channel, the paper illustrates how to estimate the symbol error rate of a M-QAM system.
[April 18, 2007, 0:00]
