Results 91 to 100 of about 23,935 (248)

Perbandingan Kinerja LDPC (Low Density Parity Check) Dengan Metode Decoding Log Domain Sum Product Pada Kanal AWGN Dan Multipath Fading [PDF]

open access: yes, 2011
As an effect of the globalization era, telecomunication technology, especially in wireless comunication system is forced to prepare high data rate with reliable Quality of Services (QOS) with Low Bit Error Rate (BER) and very small power.
HAMKA, HAMKA, Moegiharto, Yoedy
core  

Classical channel bandwidth requirements in continuous variable quantum key distribution systems

open access: yesIET Quantum Communication, Volume 5, Issue 4, Page 601-611, December 2024.
The reconciliation method for continuous variable quantum key distribution (CV‐QKD) systems is usually chosen based on its reconciliation efficiency. Nonetheless, one must also consider the requirements of each reconciliation method in terms of the amount of information transmitted on the classical channel. Such may limit the achievable key rates.
Margarida Almeida   +3 more
wiley   +1 more source

Channel code-division multiple access and its multilevel-structured LDPC-based instantiation

open access: yes, 2008
In this paper, we introduce and outline the concept of channel code-division multiple access using a design example based on the recently proposed multilevel-structured (MLS) low-density parity-check (LDPC) codes.
Bonello, N.   +3 more
core   +1 more source

Analisa Performansi Low Density Parity Check Code Pada Sistem CDMA [PDF]

open access: yes, 2011
The purpose of this final project is to analyze the performance of Low Density Parity Check Code for CDMA system. The analyze is to compare the simulation program of LDPC-CDMA with different parity check matrix LDPC and different amount of active user ...
Affandi, Ahmad, Moegiharto, Yoedy
core  

Quasi-Cyclic LDPC Codes: Influence of Proto- and Tanner-Graph Structure on Minimum Hamming Distance Upper Bounds

open access: yes, 2011
Quasi-cyclic (QC) low-density parity-check (LDPC) codes are an important instance of proto-graph-based LDPC codes. In this paper we present upper bounds on the minimum Hamming distance of QC LDPC codes and study how these upper bounds depend on graph ...
Smarandache, Roxana, Vontobel, Pascal O.
core   +1 more source

Parity-Check Network Coding for Multiple Access Relay Channel in Wireless Sensor Cooperative Communications

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
A recently developed theory suggests that network coding is a generalization of source coding and channel coding and thus yields a significant performance improvement in terms of throughput and spatial diversity.
Bing Du, Jun Zhang
doaj   +1 more source

The Design of Vertical RS-CRC and LDPC Code for Ship-Based Satellite Communications On-the-Move

open access: yesIEEE Access, 2019
This paper investigates the decoding performance of channel-coded ship-based satellite communications on-the-move (SSCOTM) between ships and satellites.
Bingrui Wang   +3 more
doaj   +1 more source

Bit-Metric Decoding of Non-Binary LDPC Codes with Probabilistic Amplitude Shaping

open access: yes, 2018
A new approach for combining non-binary low-density parity-check (NB-LDPC) codes with higher-order modulation and probabilistic amplitude shaping (PAS) is presented.
Böcherer, Georg   +2 more
core   +1 more source

Differentially Encoded LDPC Codes—Part II: General Case and Code Optimization

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
This two-part series of papers studies the theory and practice of differentially encoded low-density parity-check (DE-LDPC) codes, especially in the context of noncoherent detection. Part I showed that a special class of DE-LDPC codes, product accumulate
Jing Li (Tiffany)
doaj   +1 more source

Codeword Structure Analysis for LDPC Convolutional Codes

open access: yesInformation, 2015
The codewords of a low-density parity-check (LDPC) convolutional code (LDPC-CC) are characterised into structured and non-structured. The number of the structured codewords is dominated by the size of the polynomial syndrome former matrix
Hua Zhou   +3 more
doaj   +1 more source

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