Results 71 to 80 of about 11,056,883 (213)

Amalgamated Generalized Low Density Parity Check and Luby Transform Codes for the Wireless Internet [PDF]

open access: yes, 2007
Luby Transform codes (LT) were originally designed for the Binary Erasure Channel (BEC) encountered owing to randomly dropped packets in the statistical multiplexing aided Internet, where transmitted packets are not affected by the fading or noise of the
Guo, F.C.   +3 more
core   +2 more sources

Multilevel Generalised Low-Density Parity-Check Codes

open access: yes, 2006
Multilevel coding invoking generalised low-density parity-check component codes is proposed, which is capable of outperforming the classic low-density parity check component codes at a reduced decoding ...
Tee, R.Y.S., Kuo, F.C., Hanzo, L.
core   +1 more source

An LDPC Decoder Architecture forWireless Sensor Network Applications [PDF]

open access: yes, 2012
The pervasive use of wireless sensors in a growing spectrum of human activities reinforces the need for devices with low energy dissipation. In this work, coded communication between a couple of wireless sensor devices is considered as a method to reduce
Biroli, Andrea Dario Giancarlo   +5 more
core   +1 more source

Reliability Ratio Based Weighted Bit-Flipping Decoding for LDPC Codes

open access: yes, 2005
In this contribution, a novel reliability-ratio based weighted bit-flipping(RRWBF) algorithm is proposed for decoding Low Density Parity Check (LDPC) codes.
Hanzo, L., Guo, F.
core   +1 more source

Semi-random and semi-algebraic structural design for IRA-LDPC codes

open access: yesTongxin xuebao, 2014
A method of semi-random and semi-algebraic structure was presented for constructing the low-density parity-check matrix that corresponds to the information bits of the IRA codes.Compared with the existing structural LDPC codes,the distinct advantage of ...
Li PENG, Qi ZHANG, Bo WANG, Tao CHEN
doaj   +2 more sources

An Efficient Construction Method for Quasi-Cyclic Low Density Parity Check Codes

open access: yesIEEE Access, 2017
In this paper, we propose an optimized belief propagation (OBP) based progressive edge-growth (PEG) method for constructing quasi-cyclic low density parity check (QC-LDPC) codes. In this proposed method, Tanner graphs are built by progressively appending
Yiming Lei, Mingke Dong
doaj   +1 more source

Design of LDPC code for uncorrelated Rayleigh fading channel using modified outage probability

open access: yesICT Express
In this paper, we propose a new design metric called modified outage probability (MOP) for protograph-based low-density parity-check (LDPC) codes over the uncorrelated Rayleigh fading channel.
Woong-Shin Kwak, Jae-Won Kim
doaj   +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 (CCDMA) using a design example based on the recently proposed Multilevel Structured (MLS) LDPC codes. We succeeded in making the memory requirements of the multi-
Sheng Chen   +9 more
core   +2 more sources

High-Speed Reconciliation for CVQKD Based on Spatially Coupled LDPC Codes

open access: yesIEEE Photonics Journal, 2018
The speed of continuous variable quantum key distribution is limited by the reconciliation efficiency and the reconciliation frame error rate (FER) in the reconciliation phase.
Xue-Qin Jiang   +3 more
doaj   +1 more source

Regular and Irregular Multiple Serially- Concatenated Multiple-Parity-Check Codes for Wireless Applications

open access: yesJournal of Communications Software and Systems, 2009
Multiple Serially-Concatenated Multiple-Parity-Check (M-SC-MPC) codes are a class of structured Low-Density Parity-Check (LDPC) codes, characterized by very simple encoding, that we have recently introduced.
Marco Baldi   +3 more
doaj  

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