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- Code-Aided Channel Tracking for OFDM
- This contribution deals with the problem of tracking a frequency-selective channel for OFDM systems, where the data is protected by a powerful error-correcting code. This paper presents an EM-based receiver, operating on a single OFDM symbol at a time, that iterates between channel estimation and data detection. The channel estimator...
- Tags: Channel, Channel Estimator, Estimator, OFDM, Wireless
- White papers
Additional Resources
- A Low Complexity ML Channel Estimator for OFDM
- Orthogonal Frequency-Division Multiplexing OFDM with cyclic prefix enables low cost frequency-domain mitigation of multipath distortion. However, to determine the equalizer coefficients, knowledge of the channel frequency response is required. While a straightforward approach is to measure the response to a known pilot symbol sequence, existing literature reports a significant performance...
- Tags: OFDM, Wireless
- White papers
- Joint Estimation of Channel Response, Frequency Offset, and Phase Noise in OFDM
- Accurate channel estimates are needed in Orthogonal Frequency-Division Multiplexing OFDM, and easily obtained under the assumption of perfect phase and frequency synchronization. However, the practical receiver encounters nonnegligible PHase Noise PHN and Carrier Frequency Offset CFO, which create substantial intercarrier interference that a conventional OFDM channel estimator cannot account for....
- Tags: OFDM, Wireless
- White papers 2006-09-01
- Performance of a Low-Complexity Downlink Channel Estimator for Long-Code CDMA Systems
- Recently, a blind downlink channel estimator is proposed for long-code CDMA systems based on a covariance matching idea. By modeling long spreading codes as random codes and pre-computing some code-dependent quantities, the algorithm shows extremely low complexity. Due to inaccuracy of estimated data covariance from finite number of received data...
- Tags: Performance, University Of California, Performance Management, Research & Development, Engineering, Human Resources, Workforce Management, Business Operations
- White papers
- Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA
- A performance of the decision-directed channel estimation scheme in the context of both OFDM and MC-CDMA systems is analyzed. A difficulty associated with the employment of the LS approach to the problem of a posteriori estimation in the context of a MC-CDMA system is described and a suitable MMSE-based estimator...
- Tags: Estimation, OFDM, Wireless
- White papers
- Clustered OFDM With Adaptive Antenna Arrays for Interference Suppression
- This paper investigates clustered OFDM with adaptive antenna arrays for interference suppression. To calculate weights for interference suppression, instantaneous correlations of the received signals and channel responses corresponding to the desired signal have to be estimated. Therefore, a polynomial based parameter estimator is proposed to combat the severe leakage of...
- Tags: Georgia Institute Of Technology, Interference Suppression, OFDM, Construction, Wireless
- White papers
- Frequency Selective Fading Channel Estimation in OFDM Systems Using KL Expansion
- This paper proposes a computationally efficient, linear Minimum Mean Square Error MMSE channel estimation algorithm based on KL series expansion for OFDM systems. Based on such expansion, no matrix inversion is required in the proposed MMSE estimator. Moreover, truncation in the linear expansion of channel is achieved by exploiting the...
- Tags: Expansion, Performance, OFDM, Performance Management, Engineering, Wireless, Human Resources, Workforce Management
- White papers 2005-08-16
- Improving Channel Estimation in OFDM Systems for Sparse Multipath Channels
- This paper describes an algorithm for sparse channel estimation applicable to orthogonal frequency division multiplexing systems. The proposed algorithm uses a least squares LS technique for channel estimation and a generalized Akaike information criterion to estimate the channel length and tap positions. This effectively reduces the signal space of the...
- Tags: Algorithm, Indian Institute Of Technology, Channel Estimation, OFDM, Engineering, Wireless
- White papers 2005-01-01
- HomeCost Estimator for Excel (exe)
- HomeCost Estimator for Excel is a wizard-like, easy-to-use program for estimating home construction costs for new residential homes quickly and accurately. It has built-in city indexes, cost data, class, type and other building factors used to customize a project estimate. HomeCost Estimator is designed for contractors, builders, architects, insurance adjusters,...
- Tags: HomeCost Estimator, Microsoft Excel, Insurance, Financial Planning, Microsoft Office, Office Suites, Software, Business Operations, Corporate Insurance, Finance
- Software downloads 2008-01-09
- A Two-Stage Plug-in Bandwidth Selection and Its Implementation for Covariance Estimation
- The two most popular bandwidth choice rules for kernel HAC estimation have been proposed by Andrews (1991) and Newey and West (1994). This paper suggests an alternative approach that estimates an unknown quantity in the optimal bandwidth for the HAC estimator called normalized curvature using a general class of kernels,...
- Tags: Estimation, Bandwidth, Kernel, Concordia University
- White papers 2008-06-01
- Iterative Interference Cancellation and Channel Estimation for Mobile OFDM
- In mobile reception, the reliability of Orthogonal Frequency Division Multiplexing OFDM is limited because of the time-varying nature of the channel. This causes InterCarrier Interference ICI and increases inaccuracies in channel tracking. This paper models the ICI using derivatives of the channel amplitude. This allows the authors to design a...
- Tags: Mobile, IEEE, Advertising & Promotion, OFDM, Marketing, Wireless
- White papers 2005-01-01
- Estimator (exe)
- Estimator is a program to help people manage financial estimations in a simple and efficient manner. It uses an extremely simple interface that is easy to follow and use. This version is the first release on CNET Download.com.
- Tags: Financial, Dunstad Software, Estimator, Financial Accounting, Finance
- Software downloads 2008-05-22
- ConcreteCost Estimator for Excel (exe)
- Build accurate concrete construction estimates, save time and money. Designed for concrete, general and building contractors. ConcreteCOST Estimator contains industry standard, modifiable cost data for all cost categories covering concrete construction activities. ConcreteCOST Estimator instantly creates user-modifiable, on-screen estimate reports including price quotation. Use with confidence and profit. This version...
- Tags: ConcreteCOST Estimator, Microsoft Excel, Microsoft Office, Office Suites, Software
- Software downloads 2007-05-25
- Handy Estimator (zip)
- Handy Estimator has hundreds of form calculators and is very easy to use. It comes with a database that can be changed on the fly. Has a bid sheets. You can print, search, and add proposals. This software is for the construction business or can be used by the homeowners...
- Tags: Handy Estimator, Tools & Techniques, Storage, Databases, Management, Hardware, Enterprise Software, Software, Data Management
- Software downloads 2005-06-28
- Quick Estimator 2005 Full (exe)
- Quick Estimator 2005 is an easy to use yet powerful estimating, job tracking and project management program for small to medium sized contractors in any trade. It has many of the features of much more expensive programs, but at a fraction of the cost. Quick Estimator 2005 goes beyond estimating...
- Tags: Job, Photograph, Quick Estimator 2005, Recruitment & Selection, Project Management, Human Resources, Workforce Management, It Operations, It service Management
- Software downloads 2005-11-15
- A Blind Frequency Offset Estimator for OFDM/OQAM Systems
- Like other OFDM-like systems, OFDM/OQAM systems are very sensitive to carrier frequency offset. A new blind carrier frequency estimator is introduced herein for OFDM- /OQAM systems by exploiting the non-circularity of the received signal. Since the received signal exhibits conjugate cyclic frequencies at twice the carrier frequency offset, a frequency...
- Tags: Frequency, Texas A&M University, OFDM, Wireless
- White papers
- RepairCost Estimator for Excel (exe)
- Build accurate insurance repair estimates, save time and money. Designed for insurance repair and restoration contractors, insurance adjusters. RepairCOST Estimator contains extensive industry standard, modifiable cost data for all cost categories covering repair and restoration activities. RepairCOST Estimator instantly creates user-modifiable, on-screen estimate reports including price quotation.Version 4 may include...
- Tags: Microsoft Excel, RepairCOST Estimator, Insurance, Financial Planning, Business Operations, Corporate Insurance, Finance
- Software downloads 2007-05-23
- Channel Estimation for D-BLAST OFDM Systems
- Diagonal Bell Laboratories Layered Space-Time DBLAST structure offers a low complexity solution to realize the attractive capacity of Multiple-Input And Multiple-Output MIMO systems. This paper applies D-BLAST in Orthogonal Frequency Division Multiplexing OFDM systems and addresses the issue of channel estimation. Different from other MIMO-OFDM, where symbols at all tones...
- Tags: Channel Estimation, OFDM, Wireless
- White papers
- ICI Cancellation Based Channel Estimation for OFDM Systems
- Orthogonal Frequency Division Multiplexing OFDM), which is a multicarrier modulation scheme, splits high data rate information symbols into lower rate parallel data streams and transmits this parallel information on different orthogonal carriers. The loss of orthogonality among subcarriers causes inter-carrier interference ICI, which affects both channel estimation and detection of...
- Tags: Channel Estimation Error, OFDM, Wireless
- White papers
- GeneralCost Estimator for Excel (exe)
- Save time and money while increasing your bidding success. Designed for contractors, builders and estimators. GeneralCOST Estimator contains industry-standard material and labor cost data for in the CSI format for all cost categories covering general construction. City cost indexes are automatically applied. Comprehensive reports include price quotation. Use GeneralCOST Estimator...
- Tags: GeneralCOST Estimator, Microsoft Excel, Productivity, Microsoft Office, Strategy, Office Suites, Software, Management
- Software downloads 2007-05-23
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