Low-Complexity Tone Reservation for PAPR Reduction in OFDM Communication Systems

被引：7

作者：

Park, Kangwoo ^{[1
]}

Park, In-Cheol ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea

来源：

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS | 2012年 / 20卷 / 10期

关键词：

Orthogonal frequency division multiplexing (OFDM); peak-to-average-power ratio (PAPR); projection onto convex set (POCS)-based clipping; tone reservation; AVERAGE POWER RATIO; ALGORITHM;

D O I：

10.1109/TVLSI.2011.2164104

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Orthogonal frequency division multiplexing communication systems have a drawback that some signal values can be much higher than the average signal value. Transmitting such a high signal increases symbol error rate (SER) significantly, as the signal is usually distorted by the non-linearity of power amplifiers. Most of previous methods presented to reduce the peak-to-average-power ratio are based on iterative computations of the fast Fourier transform (FFT) and inverse FFT associated with large computational complexity. To lower the computational complexity of the tone reservation method, this paper proposes approximate algorithms and their implementation structures. Simulation results show that the SER performance of the proposed structure is similar to that of the conventional one. Compared to the conventional structure, the proposed structure reduces hardware complexity and power consumption by 62.2% and 58.4%, respectively.

引用

页码：1919 / 1923

页数：5

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