Low-density parity-check (LDPC) coded OFDM systems

H. Futaki, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

37 Citations (Scopus)

Abstract

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. Recently, low-density parity-check (LDPC) codes have attracted much attention particularly in the field of coding theory. LDPC codes were proposed by Gallager in 1962 and the performance is very close to the Shannon limit with practical decoding complexity like Turbo codes. We propose LDPC coded OFDM (LDPC-COFDM) systems to improve the bit error rate (BER) of OFDM. We show that the BER of the LDPC-COFDM is worse than that of the TCOFDM on an AWGN channel, while that of the LDPC-COFDM is better than that of the Turbo-coded OFDM (TCOFDM) on a frequency-selective fading channel.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
Pages82-86
Number of pages5
Volume1
Edition54ND
Publication statusPublished - 2001
Externally publishedYes
EventIEEE 54th Vehicular Technology Conference (VTC FALL 2001) - Atlantic City, NJ, United States
Duration: 2001 Oct 72001 Oct 11

Other

OtherIEEE 54th Vehicular Technology Conference (VTC FALL 2001)
CountryUnited States
CityAtlantic City, NJ
Period01/10/701/10/11

Fingerprint

Orthogonal frequency division multiplexing
Turbo codes
Bit error rate
Reed-Solomon codes
Intersymbol interference
Frequency selective fading
Convolutional codes
Multipath fading
Fading channels
Data communication systems
Decoding

Keywords

  • Low-density parity-check code
  • Turbo code

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Futaki, H., & Ohtsuki, T. (2001). Low-density parity-check (LDPC) coded OFDM systems. In IEEE Vehicular Technology Conference (54ND ed., Vol. 1, pp. 82-86)

Low-density parity-check (LDPC) coded OFDM systems. / Futaki, H.; Ohtsuki, Tomoaki.

IEEE Vehicular Technology Conference. Vol. 1 54ND. ed. 2001. p. 82-86.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Futaki, H & Ohtsuki, T 2001, Low-density parity-check (LDPC) coded OFDM systems. in IEEE Vehicular Technology Conference. 54ND edn, vol. 1, pp. 82-86, IEEE 54th Vehicular Technology Conference (VTC FALL 2001), Atlantic City, NJ, United States, 01/10/7.
Futaki H, Ohtsuki T. Low-density parity-check (LDPC) coded OFDM systems. In IEEE Vehicular Technology Conference. 54ND ed. Vol. 1. 2001. p. 82-86
Futaki, H. ; Ohtsuki, Tomoaki. / Low-density parity-check (LDPC) coded OFDM systems. IEEE Vehicular Technology Conference. Vol. 1 54ND. ed. 2001. pp. 82-86
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