Results 31 to 40 of about 57,027 (186)

Temperature Distribution of Air-cooling Turbo-Generator Rotor

open access: yesJournal of Harbin University of Science and Technology, 2018
In order to study the temperature distribution of the turbo-generator rotor,an air-cooling turbogenerator rotor is aimed as the research object,and a three-dimensional model of the rotor is established.
Wang Fang, Cui Lu-lu, Xu Hong-xiang
doaj   +1 more source

On the Convergence Speed of Turbo Demodulation with Turbo Decoding

open access: yes, 2012
Iterative processing is widely adopted nowadays in modern wireless receivers for advanced channel codes like turbo and LDPC codes. Extension of this principle with an additional iterative feedback loop to the demapping function has proven to provide ...
Baghdadi, Amer   +2 more
core   +3 more sources

Forward and backward RLS-DDCE processing in MIMO-OFDM spatial multiplexing receivers [PDF]

open access: yesAdvances in Radio Science, 2010
In this paper we present a novel approach in frequency domain channel estimation technique. Our proposal is based on the recursive least squares (RLS) algorithm combined with the decision making process called decision directed channel estimation (RLS ...
M. Muxfeldt, P. Beinschob, U. Zölzer
doaj   +1 more source

Principle and applications of semiconductor optical amplifiers-based turbo-switches

open access: yesFrontiers of Optoelectronics, 2016
All-optical high-speed turbo-switches can effectively increase the switching speed using cascaded semiconductor optical amplifiers (SOAs). The overall recovery time or the bandwidth of turbo-switch was numerically analyzed with time-domain and frequency-domain SOA models.
Xuelin Yang, Weisheng Hu
openaire   +1 more source

Turbo Decoding Using BCJR Algorithm [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2013
In this paper I will present some concepts related to turbo codes, the principle of their operation, and some results obtained by implementing the BCJR decoding algorithm known as the maximum aposteriori algorithm (MAP).
MORGOS Lucian
doaj  

Direct-Drive Conical-Rotor Permanent Magnet Synchronous Generator for Turbo-Expander, Accounting for Adaptive Equilibrium of Axial Force

open access: yesIEEE Access, 2018
The permanent magnet synchronous generator (PMSG) has been widely employed in high-speed direct-drive turbo-expander for distributed energy generation.
Jiaobao Wang   +4 more
doaj   +1 more source

Research and implementation of Turbo decoding SOVA algorithm

open access: yesDianzi Jishu Yingyong
For the application requirements of low-orbit satellite communication, in order to reduce interference and load, convolutional codes, Turbo codes and other channel coding methods are usually used to improve the reliability of transmission.
Wang Danfei, Song Junkang, Xia Huining
doaj   +1 more source

Joint Source-Channel Decoding of Variable-Length Codes with Soft Information: A Survey

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
Multimedia transmission over time-varying wireless channels presents a number of challenges beyond existing capabilities conceived so far for third-generation networks. Efficient quality-of-service (QoS) provisioning for multimedia on these channels may
Siohan Pierre, Guillemot Christine
doaj   +1 more source

Performance Evaluation of HARQ Technique with UMTS Turbo Code [PDF]

open access: yesTelfor Journal, 2011
The hybrid automatic repeat request technique (HARQ) represents the error control principle which combines an error correcting code and automatic repeat request procedure (ARQ), within the same transmission system.
S. S. Brkić, P. N. Ivaniš
doaj  

Turbo EP-based Equalization: a Filter-Type Implementation [PDF]

open access: yes, 2018
This manuscript has been submitted to Transactions on Communications on September 7, 2017; revised on January 10, 2018 and March 27, 2018; and accepted on April 25, 2018 We propose a novel filter-type equalizer to improve the solution of the linear ...
Arias-de-Reyna, Eva   +3 more
core   +2 more sources

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