Results 11 to 20 of about 58,164 (279)

Separate Turbo Code and Single Turbo Code Adaptive OFDM Transmissions

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
This paper discusses the application of adaptive modulation and adaptive rate turbo coding to orthogonal frequency-division multiplexing (OFDM), to increase throughput on the time and frequency selective channel.
Lei Ye, Alister Burr
doaj   +2 more sources

A Proposed Chaotic-Switched Turbo Coding Design and Its Application for Half-Duplex Relay Channel

open access: yesDiscrete Dynamics in Nature and Society, 2015
Both reliability and security are two important subjects in modern digital communications, each with a variety of subdisciplines. In this paper we introduce a new proposed secure turbo coding system which combines chaotic dynamics and turbo coding ...
Tamer H. M. Soliman   +2 more
doaj   +1 more source

5G V2X Performance Comparison for Different Channel Coding Schemes and Propagation Models

open access: yesSensors, 2023
Channel coding is a fundamental procedure in wireless telecommunication systems and has a strong impact on the data transmission quality. This effect becomes more important when the transmission must be characterised by low latency and low bit error rate,
Dimitrios Chatzoulis   +4 more
doaj   +1 more source

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

Enancement The Reverse Link Capacity of Third Generation Mobile Radio System [PDF]

open access: yesEngineering and Technology Journal, 2005
The paper investigates the effect of including the turbo coding in the 3G system . The bit error rate performance of the system with AWGN channel is investigated to study the effect of number of iteration , frame size , code rate and memory size of the ...
siddeq Muhaned   +2 more
doaj   +1 more source

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

On Maximum Contention-Free Interleavers and Permutation Polynomials over Integer Rings [PDF]

open access: yes, 2005
An interleaver is a critical component for the channel coding performance of turbo codes. Algebraic constructions are of particular interest because they admit analytical designs and simple, practical hardware implementation. Contention-free interleavers
Takeshita, Oscar Y.
core   +2 more sources

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

Space-time coding for UMTS. Performance evaluation in combination with convolutional and turbo coding [PDF]

open access: yes, 2000
Space-time codes provide both diversity and coding gain when using multiple transmit antennas to increase spectral efficiency over wireless communications systems.
Gaspa Maynou, Roger   +1 more
core   +1 more source

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