Pilot tone design with low peak-to-average power ratio in OFDM

被引：3

作者：

Hosokawa, S ^{[1
]}

Teo, KAD ^{[1
]}

Ohno, S ^{[1
]}

Hinamoto, T ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Engn, Dept Artificial Complex Syst Engn, Higashihiroshima 7398527, Japan

来源：

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2005年 / E88A卷 / 08期

关键词：

peak-to-average power ratio; OFDM; pilot tone;

D O I：

10.1093/ietfec/e88-a.8.2117

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

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 802.11 a standard settings, by using the channel with perfect CSI and the designed pilot-aided estimated channel for coherent detection.

引用

页码：2117 / 2123

页数：7

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