Results 201 to 210 of about 26,841 (236)

Pragmatic soft-decision data readout of encoded large DNA. [PDF]

Brief Bioinform
Ge Q, Qin R, Liu S, Guo Q, Han C, Chen W.   +5 more
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Irregular LDPC codes as concatenation of regular LDPC codes

IEEE Communications Letters, 2005
In this letter, the construction of irregular LDPC codes obtained by concatenating regular ones is considered. These codes are analyzed for the binary symmetric channel (BSC). It is shown via proper distribution evolution that such concatenated codes have in general a threshold value weaker (but not necessarily much different) than their unconstrained ...
M. Fossorier, N. Miladinovic
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Protograph-based LDPC-Hadamard Codes

2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020
In this paper, we propose a new method to design low-density parity-check Hadamard (LDPC-Hadamard) codes — a type of ultimate-Shannon-limit approaching channel codes. The technique is based on applying Hadamard constraints to the check nodes in a generalized protograph-based LDPC code, followed by lifting the generalized protograph.
Peng-Wei Zhang, Francis C. M. Lau, Chiu-Wing Sham   +2 more
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LDPC product codes

The Ninth International Conference onCommunications Systems, 2004. ICCS 2004., 2004
Low-density parity-check (LDPC) codes are well known for their abilities to achieve near Shannon channel capacity limit and low decoding complexity compared with the turbo decoder. However, their encoding complexities grow with the square of the code length.
null Zhang Qi, null Ng Chun Sum
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Nonbinary LDPC-Coded Spatial Modulation

IEEE Transactions on Wireless Communications, 2017
This paper presents a nonbinary low-density parity-check (LDPC) coded spatial modulation (CSM) for multiple-input multiple-output communication systems, in which the information bits for choosing active transmit antennas and the bits for choosing constellation signals are protected by a nonbinary LDPC code.
Dan Feng, Hengzhou Xu, Qiang Zhang, Baoming Bai   +3 more
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Coded cooperation using LDPC codes

2009 Global Mobile Congress, 2009
In this paper, a novel scheme of coded cooperation using LDPC codes is presented. Two decoding methods are proposed. A simple upper bound of this scheme is introduced based on the union bound. The performance of these two methods is evaluated and compared by simulation.
Dongfeng Zhao, Daoben Li
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Iterative LDPC-LDPC product code for bit patterned media

2016 Asia-Pacific Magnetic Recording Conference Digest (APMRC), 2016
Bit patterned media aims at high density recording of more than 10 Tb per square inch, but a burst error mostly occurred by media defects, and data write failure can be a serious problem. However, if the burst errors are compensated by erasure decoding, the performance of low-density parity check (LDPC) code, which is a strong candidate for the error ...
Seongkwon Jeong, Jaejin Lee
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LDPC-coded TCM-QPSK optical transmission scheme outperforming LDPC-coded BPSK

2013 IEEE Photonics Conference, 2013
TCM-QPSK concatenated with a properly designed outer LDPC code is evaluated and compared against LDPC-coded BPSK. Simulation results show that BER performance of the former is 0.8 dB better than that of the latter.
Yequn Zhang, Ivan B. Djordjevic
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Design of structured irregular LDPC codes from structured regular LDPC codes

Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT), 2015
Irregular Low-Density Parity-Check (LDPC) codes exhibit a performance extremely close to the Shannon capacity formula. In this paper, we presented a method of developing structured irregular LDPC codes from structured regular LDPC codes. The design is based on the expansion of the column-weight two LDPC codes.
Vibha Kulkarni, K. Jaya Sankar
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