Results 51 to 60 of about 1,613 (180)

Comparison of LDPC block and LDPC convolutional codes based on their decoding latency

2012 7th International Symposium on Turbo Codes and Iterative Information Processing (ISTC), 2012
We compare LDPC block and LDPC convolutional codes with respect to their decoding performance under low decoding latencies. Protograph based regular LDPC codes are considered with rather small lifting factors. LDPC block and convolutional codes are decoded using belief propagation.
Hassan, Najeeb ul, Lentmaier, Michael, Fettweis, Gerhard P.   +2 more
openaire   +3 more sources

Hybrid VLC–IR Communication System With Beam‐Steered Uplink and Turbo Coding Under Mobility

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
This paper presents a hybrid VLC–IR communication system integrating a beam‐steered infrared uplink with Turbo coding for reliable indoor optical wireless links. The proposed architecture achieves BER below 10−3 at 10 dB SNR and maintains stable coverage under NLOS conditions through adaptive beam steering.
Saeed Ahmed Ansari
wiley   +1 more source

A New Density Evolution Approximation for LDPC and Multi-Edge Type LDPC Codes [PDF]

IEEE Transactions on Communications, 2016
This paper considers density evolution for lowdensity parity-check (LDPC) and multi-edge type low-density parity-check (MET-LDPC) codes over the binary input additive white Gaussian noise channel. We first analyze three singleparameter Gaussian approximations for density evolution and discuss their accuracy under several conditions, namely at low rates,
Sachini Jayasooriya, Mahyar Shirvanimoghaddam, Lawrence Ong, Gottfried Lechner, Sarah J. Johnson   +4 more
openaire   +2 more sources

BB84 Quantum Key Distribution in Software‐Defined Networking Control Planes: End‐to‐End Integration, Security Analysis, and Performance Benchmarking

IET Quantum Communication, Volume 7, Issue 1, January/December 2026.
The system is implemented using Ryu, Open vSwitch, and a software BB84 simulator in a Mininet testbed with up to 20 OpenFlow switches. All measurements are repeated over 30 independent trials with full statistical reporting, while QBER stability is assessed over 1000 runs.
Raied Ibrahim, Ibrahim Khider, Salaheldin Edam, Ahmed Abdalgader, Mohamed Burai   +4 more
wiley   +1 more source

Construction of Quantum LDPC Codes From Classical Row-Circulant QC-LDPCs [PDF]

IEEE Communications Letters, 2016
Classical row-circulant quasi-cyclic (QC) low-density parity check (LDPC) matrices are known to generate efficient high-rate short and moderate-length QC-LDPC codes, while the comparable random structures exhibit numerous short cycles of length-4. Therefore, we conceive a general formalism for constructing nondual-containing Calderbank–Shor–Steane (CSS)
Zunaira Babar, Panagiotis Botsinis, Dimitrios Alanis, Soon Xin Ng, Lajos Hanzo   +4 more
openaire   +2 more sources

Scene‐Driven Semantic Alignment for Generative Communication in Underwater Images

IET Signal Processing, Volume 2026, Issue 1, 2026.
Underwater images serve as one of the most intuitive media for human perception of underwater environments. However, the limited bandwidth and susceptibility to noise in underwater acoustic (UWA) channels pose significant challenges for traditional image encoding and transmission methods, thereby hindering high‐quality image reconstruction.
Yuetong Li, Zhenyu Jia, Yuyang Peng, Yi Zhu, Fei Yuan, Li Chai   +5 more
wiley   +1 more source

Sub-Graph Based Joint Sparse Graph for Sparse Code Multiple Access Systems

IEEE Access, 2018
Sparse code multiple access (SCMA) is a promising air interface candidate technique for next-generation mobile networks, especially for massive machine-type communications. In this paper, we design a low-density parity-check (LDPC) coded SCMA detector by
Ke Lai, Lei Wen, Jing Lei, Pei Xiao, Amine Maaref, Muhammad Ali Imran   +5 more
doaj   +1 more source

Pilot‐Based Iterative Path Estimation and Maximum Ratio Combining (MRC)–Based Signal Detection of Orthogonal Time–Frequency Space (OTFS) Modulation for 6G in Fractional Doppler Channels

Journal of Computer Networks and Communications, Volume 2026, Issue 1, 2026.
The sixth generation (6G) wireless networks are used to provide a large coverage, and also this generation needed to support different emerging applications in harsh areas with higher user equipment mobility. For the above case, a new modulation technique called orthogonal time–frequency space (OTFS) modulation has emerged as a promising technique to ...
Ephrem Gelamite Demere, Zelalem Hailu Gebeyehu, Sohini Basu Roy   +2 more
wiley   +1 more source

Comparing GFDM With OFDM for Use in 6G Communication From a New Perspective

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The most important challenges facing 6G communication systems are the large amount of data and low latency as compared to previous generations. Therefore, it has become necessary to use advanced technologies to meet the requirements of 6G wireless communication systems.
Mohammed Azher Therib, Saad Saffah Hreshee, Martin Haardt   +2 more
wiley   +1 more source

A Review of the Internet of Things (IoT) Landscape: Technologies, Applications, and Open Challenges

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The Internet of Things (IoT) has emerged as a large‐scale ecosystem that integrates sensing, communication, and computation across diverse application domains. Its deployment spans smart homes, wearable devices, industrial automation, and smart cities, where heterogeneous devices are required to operate under strict performance, reliability, and ...
Sidna Jeddou, Luis Diez, Amine Baina, Najid Abdellah, Ramón Agüero, Deepali   +5 more
wiley   +1 more source