Pilot Tone Design with Low Peak-to-Average Power Ratio in OFDM(Communication Theory and Signals, <Special Section>Papers Selected from the 19th Symposium on Signal Processing)
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概要
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In Orthogonal Frequency Division Multiplexing (OFDM), the composite time signal exhibits a high peak-to-average power ratio (PAPR). Due to non-linearities of the transmit power amplifiers, this high PAPR generates in-band distortion, out of band noise (OBN) or spectral spreading, which degrades the bit-error rate (BER) performance. In this paper, we propose a simple way to combat this problem without sacrificing channel estimation and frequency-offset tracking accuracy, by designing a sub-optimal configuration of the pilot tones. The effectiveness of the newly designed pilot tones in reducing PAPR is validated by Monte-Carlo simulations. The corresponding improvement in BER is also verified by simulations under IEEE 802.11a standard settings, by using the channel with perfect CSI and the designed pilot-aided estimated channel for coherent detection.
- 社団法人電子情報通信学会の論文
- 2005-08-01
著者
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Ohno Shuichi
Hiroshima Univ. Higashihiroshima‐shi Jpn
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Ohno Shuichi
Department Of Artificial Complex Systems Engineering Graduate School Of Engineering Hiroshima Univer
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TEO Kok
Department of Artificial Complex Systems Engineering, Graduate School of Engineering, Hiroshima Univ
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Teo Kok
Department Of Artificial Complex Systems Engineering Graduate School Of Engineering Hiroshima Univer
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Hinamoto Takao
Hiroshima Univ. Higashi‐hiroshima‐shi Jpn
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Hinamoto Takao
Department Of Artificial Complex Systems Engineering Graduate School Of Engineering Hiroshima Univer
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HOSOKAWA Shinji
Department of Artificial Complex Systems Engineering, Graduate School of Engineering, Hiroshima Univ
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Hosokawa Shinji
Department Of Artificial Complex Systems Engineering Graduate School Of Engineering Hiroshima Univer
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