Results 81 to 90 of about 69,988 (217)

Floor Scale Modulo Lifting for QC-LDPC codes

open access: yesCoRR, 2017
7 pages, 2 ...
Nikita Polyanskii   +2 more
openaire   +2 more sources

The Performance Simulation of MIMO-OFDM System Based on QC-LDPC [PDF]

open access: yes, 2007
QC-LDPC码是一个十分重要的LDPC码研究分支。QC-LDPC码(准循环低密度奇偶校验码)是一类结构化的LDPC码,其校验矩阵H采用准循环方式构造,具有实现复杂度低的特点,易于硬件实现。大量研究人员认为,MIMO-OFDM技术将会成为4G的核心技术。将QC-LDPC码与MIMO-OFDM系统相结合,分析了在时变频率选择性衰落信道下的系统性能。仿真结果表明,在时变频率选择性衰弱信道下,QC-LDPC码与随机构造的LDPC码具有接近的系统性能。Quasi Cyclic Low Density ...
王琳, 林伟琼
core  

Soft Decoding Assisted Interference Cancellation in a Non-Binary LDPC Coded Fast Frequency Hopping Multiuser System Using Product Combining [PDF]

open access: yes, 2007
In this contribution, soft-input-soft-output (SISO) decoding aided successive interference cancellation (SIC) is considered in fast frequency hopping (FFH), M-ary frequency shift keying (MFSK) using product combining (PC), when operating in multiple ...
Lie-Liang Yang   +7 more
core   +1 more source

SIMPLE RATELESS CHANNEL CODING BERBASIS QC-LDPC CODES 5G NEW RADIO UNTUK INTERNET OF THINGS [PDF]

open access: yes, 2019
Telekomunikasi generasi kelima 5G New Radio (5G-NR) menggunakan quasi-cyclic Low Density Parity Check (QC-LDPC) codes sebagai channel coding untuk transmisi data karena memiliki kemampuan error correction yang baik serta bisa adaptif terhadap kanal ...
ARINI FITRI
core  

Investigation of punctured LDPC codes and time-diversity on free-space optical links [PDF]

open access: yes, 2011
In this paper, we analyze the behavior of DVB-S2 un-punctured/punctured low-density parity-check (LDPC) coded on-off-keying (OOK) under atmospheric turbulence conditions by utilizing time diversity. A performance characterization between these schemes is
Ghassemlooy, Zabih   +4 more
core  

On the lifting degree of girth-8 QC-LDPC codes

open access: yesDesigns, Codes and Cryptography
The lifting degree and the deterministic construction of quasi-cyclic low-density parity-check (QC-LDPC) codes have been extensively studied, with many construction methods in the literature, including those based on finite geometry, array-based codes, computer search, and combinatorial techniques.
Haoran Xiong   +3 more
openaire   +2 more sources

Investigation of optimization for QC-LDPC code decoders on reconfigurable hardware platforms and potential applications [PDF]

open access: yes, 2023
Low-density parity check (LDPC) codes are a class of linear block codes characterized by a sparse parity-check matrix. As a sub-class of LDPC codes, Quasi-cyclic LDPC (QC-LDPC) codes with an innate hardware-friendly structure, have been widely used as
Ma, Longyu (Sean)
core  

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