Results 11 to 20 of about 20,900 (152)

Combined Distributed Turbo Coding and Space Frequency Block Coding Techniques

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
The distributed space-time (frequency) coding and distributed channel turbo coding used independently represent two cooperative techniques that can provide increased throughput and spectral efficiency at an imposed maximum Bit Error Rate (BER) and delay
Silva A   +7 more
doaj   +2 more sources

Haberleşme Sistemlerinde Turbo Kodlama ve Turbo İlkesinin Bazı Pratik Uygulamaları

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2013
söz etmiştir. Shannon, veri iletim hızı içi teorik bir sınır tanımlamış ve Shannon’dan günümüze kadar bu sınıra yaklaşma çabaları sürmüştür. Shannon’dan sonra çok sayıda etkin kodlama ve kod çözme teknikleri bulunmuş olmasına rağmen, 90’lı yılların ...
Selman KULAÇ, Murat Hüsnü SAZLI
doaj   +4 more sources

Data Reconciliation Method in Satellite Quantum Key Distribution [PDF]

open access: yesJisuanji gongcheng, 2017
Quantum key distribution applies fundamental laws of quantum physics to guarantee secure communication.Few number of information exchanges is the key of satellite-based quantum key distribution.According to the characteristics and requirements of data ...
ZHONG Xianfeng,TANG Yu,JIN Biao,WU Teng,LI Fengzhi,LIU Weiyue
doaj   +1 more source

Coded modulation scheme employing turbo codes

open access: yesElectronics Letters, 1995
The authors present a turbo coding scheme for bandwidth-efficient modulation that outperforms turbo coding with Gray mapping by employing Ungerboeck codes as component codes. The scheme can be decoded iteratively and achieves very good bit error rates at low signal to noise ratios after a small number of iterations. 8PSK is used as an example, although
Robertson, P., Wörz, T.
openaire   +3 more sources

Performance Benefits of Network Coding for HEVC Video Communications in Satellite Networks

open access: yesIranian Journal of Electrical and Electronic Engineering, 2021
High-Efficiency Video Coding (HEVC) is the latest video encoding standard that achieves much better compression efficiency compared to the earlier encoding standards.
H. Hamdoun   +4 more
doaj  

Spatially coupled turbo codes [PDF]

open access: yes2014 8th International Symposium on Turbo Codes and Iterative Information Processing (ISTC), 2014
In this paper, we introduce the concept of spatially coupled turbo codes (SC-TCs), as the turbo codes counterpart of spatially coupled low-density parity-check codes. We describe spatial coupling for both Berrou et al. and Benedetto et al. parallel and serially concatenated codes.
Moloudi, Saeedeh   +2 more
openaire   +3 more sources

Turbo Coding, Turbo Equalisation and Space-Time Coding [PDF]

open access: yes, 2002
Against the backdrop of the emerging 3G wireless personal communications standards and broadband access network standard proposals, this volume covers a range of coding and transmission aspects for transmission over fading wireless channels. It presents the most important classic channel coding issues and also the exciting advances of the last decade ...
Hanzo, L., Liew, T.H., Yeap, B.L.
openaire   +3 more sources

Turbo Equalization With Irregular Turbo Codes [PDF]

open access: yes2007 4th International Symposium on Wireless Communication Systems, 2007
We analyze a turbo equalization system that combines maximum a posteriori probability (MAP) equalization with irregular turbo codes. Our goal is to approach the information capacity limit for severe inter-symbol interference (ISI) channels. To this end, we optimize the degree profile of irregular turbo codes by maximizing the minimum distance between ...
Vladimir D. Trajkovic   +2 more
openaire   +1 more source

Equivalent MIMO Channel Matrix Sparsification for Enhancement of Sensor Capabilities

open access: yesSensors, 2022
One of the development directions of new-generation mobile communications is using multiple-input multiple-output (MIMO) channels with a large number of antennas. This requires the development and utilization of new approaches to signal detection in MIMO
Mikhail Bakulin   +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

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