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Knot theory and error-correcting codes. [PDF]

open access: yesDes Codes Cryptogr
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Low-density parity-check (LDPC) coded OFDM systems

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002
Orthogonal frequency division multiplexing (OFDM) is a very attractive technique for high-bit-rate data transmission in a multipath fading environment that causes intersymbol interference (ISI). There are many error-correcting codes applied to OFDM, convolutional codes, Reed-Solomon codes, turbo codes, and so on.
Hisashi Futaki, Tomoaki Ohtsuki
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Performance of low-density parity-check (LDPC) coded OFDM systems

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2003
Orthogonal frequency division multiplexing (OFDM) is a very attractive technique for high-bit-rate data transmission in multipath environments. Many error-correcting codes have been applied to OFDM. Recently, LDPC codes have attracted much attention. The performance of LDPC codes is very close to the Shannon limit, with practical decoding complexity ...
Hisashi Futaki, Tomoaki Ohtsuki
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Low-density parity-check code (LDPC) schemes with BICM

International Conference on Communication Technology Proceedings, 2003. ICCT 2003., 2004
LDPC codes are serious opponent of turbo codes. This paper presents LDPC schemes using bit-interleaving coded modulation (BICM), which can increase the spectral efficiency two or three times with little loss of power efficiency. And the decoding complexity is also addressed in this paper.
null Hai-Gang Zhang   +3 more
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Low-Density Parity-Check (LDPC) Codes

2012
In this chapter, low-density parity-check (LDPC) codes, a class of powerful iteratively decodable error correcting codes, are introduced. The chapter first reviews some basic concepts and results in information theory such as Shannon’s channel capacity and channel coding theorem. It then overviews the Flash memory channel model.
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Design of low-density parity-check (LDPC) codes for high order constellations

IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., 2005
In this paper, we propose a simple design of LDPC codes which combines the good properties of multilevel coding (MLC) and bit-interleaved coded modulation (BICM) schemes with Gray-mapped PAM constellations and one-shot demodulation. Through simulations, we show that it performs better than MLC/parallel independent decoding for short-medium lengths ...
Hari Sankar   +2 more
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Low-density parity-check (LDPC) coded OFDM systems with M-PSK

Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367), 2003
Orthogonal frequency division multiplexing (OFDM) is a very attractive technique to achieve the high-bit-rate transmission required for future mobile communications. To improve the error rate performance of OFDM, forward error correction coding is essential.
Hisashi Futaki, Tomoaki Ohtsuki
openaire   +1 more source

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