Results 91 to 100 of about 19,018 (206)

Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We present a new turbo multiuser detector for turbo-coded direct sequence code division multiple access (DS-CDMA) systems. The proposed detector is based on the utilization of a parallel interference cancellation (PIC) and a bank of turbo decoders.
Andrea Bernacchioni   +2 more
doaj   +1 more source

QFEC ASIP: A Flexible Quad-Mode FEC ASIP for Polar, LDPC, Turbo, and Convolutional Code Decoding

open access: yesIEEE Access, 2018
In this paper, we extend polar decoding function to our previous design, and propose a flexible quad-mode forward error correction application specific instruction-set processor (QFEC ASIP) that supports polar, low-density parity-check (LDPC), turbo, and
Wan Qiao, Dake Liu, Shaohan Liu
doaj   +1 more source

Performance for Turbo code on Ricean fading channel

open access: yesTongxin xuebao, 2005
For a given channel estimation variance, a new metric for Turbo decoding on Ricean channel was proposed, and a novel formula for channel reliability factor Lc was concluded.
YAO Ru-gui1, WANG Yong-sheng1, XU Juan2
doaj   +2 more sources

Concatenated Turbo/LDPC codes for deep space communications: performance and implementation [PDF]

open access: yes, 2013
Deep space communications require error correction codes able to reach extremely low bit-error-rates, possibly with a steep waterfall region and without error floor. Several schemes have been proposed in the literature to achieve these goals.
Condo, Carlo
core  

Iterative Equalization and Source Decoding for Vector Quantized Sources

open access: yes, 2006
In this contribution an iterative (turbo) channel equalization and source decoding scheme is considered. In our investigations the source is modelled as a Gaussian-Markov source, which is compressed with the aid of vector quantization. The communications
Hanzo, L.   +3 more
core  

Turbo equalization and its improvement in BICM-ID based on hard-decision

open access: yesTongxin xuebao, 2009
Conventional receivers executed equalization and channel decoding independently. Turbo equalization was a technique which combined equalization and decoding.
ZHAO Chun-hui1, LV Qiang1, BI Wen-bin2
doaj   +2 more sources

PERFORMANCE EVALUATION OF TURBO CODED OFDM SYSTEMS AND APPLICATION OF TURBO DECODING FOR IMPULSIVE CHANNEL [PDF]

open access: yesICTACT Journal on Communication Technology, 2010
A comparison of the performance of hard and soft-decision turbo coded Orthogonal Frequency Division Multiplexing systems with Quadrature Phase Shift Keying (QPSK) and 16-Quadrature Amplitude Modulation (16-QAM) is considered in the first section of this ...
Savitha H. M., Muralidhar Kulkarni
doaj  

Parallelism Efficiency in Convolutional Turbo Decoding

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
Parallel turbo decoding is becoming mandatory in order to achieve high throughput and to reduce latency, both crucial in emerging digital communication applications. This paper explores and analyzes parallelism techniques in convolutional turbo decoding
Baghdadi Amer   +2 more
doaj  

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

Threshold Based Iteration Stopping Criterion for Turbo Codes and for Scheme Combining a Turbo Code and a Golden Space-Time Block Code

open access: yesAdvances in Electrical and Computer Engineering, 2014
This paper proposes an iteration stopping criterion for turbo decoding with Benedetto's decoding algorithm based on a posteriori probabilities. This stopping criterion is used in two schemes.
SAVIN, A., TRIFINA, L., ANDREI, M.
doaj   +1 more source

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