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Low-density parity-check (LDPC) coded MIMO systems with iterative turbo decoding
2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484), 2003Transmit diversity schemes have been studied for high spectral-efficiency and high bit-rate transmission, such as multi-input multi-output (MIMO) systems. In the MIMO system, forward error correction coding is essential for high quality communications.
H. Futaki, T. Ohtsuki
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An Adaptation of Min-Sum Decoder for 5G Low-Density Parity-Check Codes
International Symposium on Circuits and Systems, 2019This paper presents an adaptation of the Min-Sum decoders for the Low-Density Parity-Check (LDPC) used in the enhanced mobile broadband (eMBB) scenario in the 5th generation mobile networks (5G). Starting from the structure of the proposed LDPC codes for
Khoa LeTrung +2 more
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Design of low-density parity-check (LDPC) codes for high order constellations
IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., 2005In this paper, we propose a simple design of LDPC codes which combines the good properties of multilevel coding (MLC) and bit-interleaved coded modulation (BICM) schemes with Gray-mapped PAM constellations and one-shot demodulation. Through simulations, we show that it performs better than MLC/parallel independent decoding for short-medium lengths ...
H. Sankar +2 more
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Efficient Encoding of Quasi-Cyclic Low-Density Parity-Check Codes
IEEE Advanced Information Technology, Electronic and Automation Control Conference, 2018A compact encoding process with three phases is proposed for quasi-cyclic low-density parity-check (QC-LDPC) codes. A back substitution circuit is shared at the first and third phases.
Tingting Liang +3 more
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Low complexity iterative decoding algorithm for low-density parity-check (LDPC) codes
2008 1st IFIP Wireless Days, 2008The reliability ratio weighted based bit-flipping (RRWBF) algorithm for decoding low-density parity-check (LDPC) codes has recently been developed to provide the best performance among all existing bit-flipping based algorithms. The implementation efficient reliability ratio weighted based bit-flipping (IERRWBF) algorithm speedup the original algorithm
Hany R. Zeidan, Maha M. Elsabrouty
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High-speed simulation of partial response channels employing low-density parity check (LDPC) codes
SPIE Proceedings, 2003We developed a high-speed simulator for partial response (PR) channels employing low density parity check (LDPC) codes. Bit error rate (BER) performances for channels employing PR(1,1) and PR(1,2,2,1) targets wtih blue laser and 0.85 numerical aperture (NA) are estimated by simulating up to 10 11 data sampled which allowed us to estimate BERs as low ...
Toshihiro Horigome +3 more
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Image Communication Using Quasi-Cyclic Low-Density Parity-Check (QC-LDPC) Code
2020Proposed quasi-cyclic low-density parity-check code (QC-LDPC) efficiently communicates image at comparable peak signal-to-noise ratio (PSNR) with less signal-to-noise ratio (SNR). Encoding of the image is done using the Gauss–Jordan elimination method while decoding is done using the min-sum iterative message-passing algorithm using the code length ...
Dharmesh Jayantibhai Patel +2 more
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Low-Density Parity-Check (LDPC) Codes
2012In this chapter, low-density parity-check (LDPC) codes, a class of powerful iteratively decodable error correcting codes, are introduced. The chapter first reviews some basic concepts and results in information theory such as Shannon’s channel capacity and channel coding theorem. It then overviews the Flash memory channel model.
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2020 International Seminar on Application for Technology of Information and Communication (iSemantic), 2020
Visible Light Communication (VLC) that utilizes free space optics as a transmission channel has a high-speed data communication capability, which uses Light Emitting Diode (LED) as a transmitter. Problems occurred in this wireless communication is the distance. VLC can only reach relatively short distance if compared to Radio Frequency (RF).
Brian Pamukti +2 more
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Visible Light Communication (VLC) that utilizes free space optics as a transmission channel has a high-speed data communication capability, which uses Light Emitting Diode (LED) as a transmitter. Problems occurred in this wireless communication is the distance. VLC can only reach relatively short distance if compared to Radio Frequency (RF).
Brian Pamukti +2 more
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Journal of Shanghai Jiaotong University (Science), 2016
In this paper, a family of rate-compatible (RC) low-density parity-check (LDPC) convolutional codes can be obtained from RC-LDPC block codes by graph extension method. The resulted RC-LDPC convolutional codes, which are derived by permuting the matrices of the corresponding RC-LDPC block codes, are systematic and have maximum encoding memory ...
Liwei Mu, Guojun Han, Zhiyong Liu
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In this paper, a family of rate-compatible (RC) low-density parity-check (LDPC) convolutional codes can be obtained from RC-LDPC block codes by graph extension method. The resulted RC-LDPC convolutional codes, which are derived by permuting the matrices of the corresponding RC-LDPC block codes, are systematic and have maximum encoding memory ...
Liwei Mu, Guojun Han, Zhiyong Liu
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