Results 81 to 90 of about 13,125 (210)

Turbo Decoder for Low-Power Ultrawideband Communication Systems

open access: yesInternational Journal of Digital Multimedia Broadcasting, 2008
A new method to reduce the computational complexity of the turbo decoding in ultrawideband (UWB) orthogonal frequency division multiplexing (OFDM) system is proposed.
Esam A. Obiedat, Lei Cao
doaj   +1 more source

Performance Analysis of Turbo Codes

open access: yesCommunications, 2013
The article focuses on the performance analyses of Turbo Codes. These codes belong to the group of error correction codes. By their use, it is possible to achieve high system performance.
Jakub Sedy   +3 more
doaj   +1 more source

Improved Max-Log-MAP Turbo Decoding by Maximization of Mutual Information Transfer

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
The demand for low-cost and low-power decoder chips has resulted in renewed interest in low-complexity decoding algorithms. In this paper, a novel theoretical framework for improving the performance of turbo decoding schemes that use the max-log-MAP ...
Karimi Hamid Reza   +2 more
doaj   +1 more source

Extrinsic Information Modification in the Turbo Decoder by Exploiting Source Redundancies for HEVC Video Transmitted Over a Mobile Channel

open access: yesIEEE Access, 2016
An iterative turbo decoder-based cross layer error recovery scheme for compressed video is presented in this paper. The soft information exchanged between two convolutional decoders is reinforced both by channel coded parity and video compression ...
Ryan Perera   +3 more
doaj   +1 more source

Energy-efficient wireless communication for mobile multimedia terminals [PDF]

open access: yes, 2003
This paper presents a control system that adapts a WCDMA receiver at run-time to minimize the energy consumption while providing an adequate Quality of Service (QoS).
Hurink, Johann L.   +2 more
core   +3 more sources

Iterative Decoding and Turbo Equalization: The Z-Crease Phenomenon

open access: yes, 2013
Iterative probabilistic inference, popularly dubbed the soft-iterative paradigm, has found great use in a wide range of communication applications, including turbo decoding and turbo equalization.
Li, Jing, Xie, Kai
core   +1 more source

Influence of Extrinsic Information Scaling Coefficient on Double-Iterative Decoding Algorithm for Space-Time Turbo Codes with Large Number of Antennas

open access: yesAdvances in Electrical and Computer Engineering, 2011
This paper analyzes the extrinsic information scaling coefficient influence on double-iterative decoding algorithm for space-time turbo codes with large number of antennas. The max-log-APP algorithm is used, scaling both the extrinsic information in the
TRIFINA, L.   +2 more
doaj   +1 more source

Iterative joint channel and data estimation for rank-deficient MIMO-OFDM

open access: yes, 2007
In this paper we propose a turbo-detected multi-antenna-multi-carrier receiver scheme. Following the philosophy of the turbo processing, our turbo MIMO-OFDM receiver comprises a succession of detection modules, namely the channel estimator, the space ...
Akhtman, Jos   +3 more
core  

On Complexity, Energy- and Implementation-Efficiency of Channel Decoders

open access: yes, 2010
Future wireless communication systems require efficient and flexible baseband receivers. Meaningful efficiency metrics are key for design space exploration to quantify the algorithmic and the implementation complexity of a receiver.
Kienle, Frank   +2 more
core   +1 more source

Performance Evaluation of Linear Turbo-Receivers Using Analytical Extrinsic Information Transfer Functions

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
Turbo-receivers reduce the effect of the interference-limited propagation channels through the iterative exchange of information between the front-end receiver and the channel decoder.
Leszek Szczeciński   +1 more
doaj   +1 more source

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