A Low-Complexity PTS-based PAPR Reduction Technique for OFDM Signals without Transmission of Side Information
A Low-Complexity PTS-based PAPR Reduction Technique for OFDM Signals without Transmission of Side Information
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DOI：
10.1007/s11265-008-0238-y
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发表时间：
2006-10
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影响因子：
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通讯作者：
Th. Giannopoulos;Vassilis Paliouras
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文献类型：
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作者：
Th. Giannopoulos;Vassilis Paliouras
增加的峰均功率比（PAPR）对基于正交频分复用的信号提出了设计挑战。解决PAPR增加问题的有效技术是部分发送序列（PTS）方法。PTS的一个显著缺点是它将发射的符号与发射机选择的加权因子相乘。由于解码需要加权因子，因此在大多数情况下，它们被显式地发送。本文提出了一种新的低复杂度的技术，用于检索的加权因子在接收机。所提出的解码器使用导频音的预定义值，并探索所有允许的加权因子组合，以识别发射机所采用的因子组合。所提出的解码器不需要额外的导频音或显式传输的边信息，因此没有数据速率损失是隐含的。此外，本文提出了一个数字超大规模集成实现的建议PTS解码器，并证明其低功耗特性。
Increased peak-to-average power ratio (PAPR) imposes a design challenge for orthogonal frequency division multiplexing-based signals. An efficient technique to address the increased PAPR problem is the partial transmit sequences (PTS) approach. A significant drawback of PTS is the fact that it multiplies the transmitted symbol with weighting factors selected by the transmitter. Since the weighting factors are required for decoding, they are explicitly transmitted, in most cases. This paper proposes a new low-complexity technique for retrieving the weighting factors in the receiver. The proposed decoder uses the predefined values of pilot tones and explores all the permissible combinations of weighting factors in order to identify the factor combination employed by the transmitter. The proposed decoder requires no additional pilot tones or explicit transmission of side information, therefore no data rate loss is implied. Furthermore this paper presents a digital very large scale integration implementation of the proposed PTS decoder and demonstrates its low-power properties.