Low Density Parity Check (LDPC) Coded OFDM System Using Unitary Matrix Modulation (UMM) 


Vol. 30,  No. 5, pp. 436-444, May  2005


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  Abstract

Unitary matrix modulation (UMM) is investigated in multiple antennas system that is called unitary space-time modulation (USTM). In an OFDM, the diagonal components of UMM with splitting over the coherence bandwidth (UMM-S/OFDM) have been proposed. Recently LDPC code is strongly attended and studied due to simple decoding property with good error correction property. In this paper, we propose LDPC coded UMM-S/OFDM for increasing the system performance. Our proposed system can obtain frequency diversity using UMM-S/OFDM like USTM/OFDM, and large coding gain using LDPC code. The superior characteristics of the proposed UMM-S/OFDM are demonstrated by extensive computer simulations in multi-path Rayleigh fading channel.

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  Cite this article

[IEEE Style]

N. S. Kim, H. M. Kang, S. H. Cho, "Low Density Parity Check (LDPC) Coded OFDM System Using Unitary Matrix Modulation (UMM)," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 5, pp. 436-444, 2005. DOI: .

[ACM Style]

Nam Soo Kim, Hwan Min Kang, and Sung Ho Cho. 2005. Low Density Parity Check (LDPC) Coded OFDM System Using Unitary Matrix Modulation (UMM). The Journal of Korean Institute of Communications and Information Sciences, 30, 5, (2005), 436-444. DOI: .

[KICS Style]

Nam Soo Kim, Hwan Min Kang, Sung Ho Cho, "Low Density Parity Check (LDPC) Coded OFDM System Using Unitary Matrix Modulation (UMM)," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 5, pp. 436-444, 5. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880