Improved Successive Detector for OFDM in Time-Variant Multipath Channels
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概要
- 論文の詳細を見る
Time variations of wireless multipath channels can lead to severe intercarrier interference (ICI) in orthogonal frequency division multiplex (OFDM) systems, whereas large Doppler frequency spread can provide us with time diversity gain. In order to take advantage of the time diversity and to suppress the interference and noise enhancement at the same time, the receiver normally detects the data successively. In this letter, we propose an improved detection ordering based on the log-likelihood ratio (LLR) rather than the signal-to-noise ratio (SNR) for the successive detector. Using both theoretical analysis and computer simulation, it is shown that this scheme outperforms the traditional successive detection methods.
- （社）電子情報通信学会の論文
- 2009-05-01
著者
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ZHU Shihua
Department of Information and Communication Engineering, Xian Jiaotong University
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Li Feng
Department Of Radiology Shinshu University School Of Mmedicine
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Zhu Shihua
Department Of Information And Communication Engineering Xi'an Jiaotong University
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Li Feng
Department Of Information And Communication Engineering Xi'an Jiaotong University
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RONG Mei
Department of Information and Communication Engineering, Xi'an Jiaotong University
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Rong Mei
Department Of Information And Communication Engineering Xi'an Jiaotong University
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Li Feng
Department Of Cardiothoracic Surgery The Second Xiang Ya Hospital Of Central South University
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Rong Mei
Dep. Of Information And Communication Engineering Xi'an Jiaotong Univ.
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