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Iterative Channel Estimation and LDPC Decoding With Encoded Pilots
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- Authors
- Mi-Kyung Oh, Hyuck M. Kwon, Dong-Jo Park, Yong Hoon Lee
- Issue Date
- 2008-01
- Citation
- IEEE Transactions on Vehicular Technology, v.57, no.1, pp.273-285
- ISSN
- 0018-9545
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- This paper proposes to encode pilot bits together with information bits by using a systematic encoder and applying them to an iterative receiver, where channel estimation and decoding are iteratively performed. This paper then shows why and how the encoded pilot bits can give a positive gain over a conventional uncoded pilot system. Specifically, this paper considers an orthogonal frequency-division multiplexing system that is encoded by a low-density parity-check code under a frequency-selective fading channel and shows theoretical analysis as well as simulation results. © 2008 IEEE.
- KSP Keywords
- Channel estimation(CE), Frequency Selective Fading Channels, Frequency selective fading(FF), Iterative channel estimation, LDPC decoding, Low Density Parity Check(LDPC), Orthogonal Frequency-Division Multiplexing(OFDM), Parity check codes, Theoretical Analysis, iterative receiver, pilot system