Iterative estimation and decoding for an LDPC-coded OFDMA system in uplink environments

Yun Hee Kim, Kwang Soon Kim, Jae Young Ahn

Research output: Contribution to journalConference article

10 Citations (Scopus)

Abstract

In this paper, we propose an LDPC-coded OFDMA system with a resource allocation method suitable for the uplink of mobile cellular environments. At the receiver of the proposed system, an iterative channel estimation and decoding (IED) method with a Wiener filter adapting to the channel variation rate is employed to support high mobility without boosting the pilot power. For practical applications, the channel variation rate is also estimated with pilot symbols to select Wiener filter coefficients for every received packet dynamically allocated. It is shown that the proposed system supports the mobility up to 250 km/h and exhibits more than 1 dB performance gain over the system with conventional non-iterative receiver.

Original languageEnglish
Pages (from-to)2478-2482
Number of pages5
JournalIEEE International Conference on Communications
Volume4
Publication statusPublished - 2004 Aug 30

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Channel estimation
Resource allocation
Decoding

All Science Journal Classification (ASJC) codes

  • Media Technology

Cite this

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Iterative estimation and decoding for an LDPC-coded OFDMA system in uplink environments. / Kim, Yun Hee; Kim, Kwang Soon; Ahn, Jae Young.

In: IEEE International Conference on Communications, Vol. 4, 30.08.2004, p. 2478-2482.

Research output: Contribution to journalConference article

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