On the use of hexagonal constellation for peak-to-average power ratio reduction of an OFDM signal

被引：36
|
作者：
Han, Seung Hee [1 ]
Cioffi, John M. [1 ]
Lee, Jae Hong [2 ]
机构：
[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
[2] Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul 151742, South Korea
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2008年 / 7卷 / 03期
关键词：
OFDM; PAPR; hexagonal constellation; partial transmit sequence (PTS); selected mapping (SLM);
D O I：
10.1109/TWC.2007.06104
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
One of the main drawbacks of orthogonal frequency division multiplexing (OFDM) is the high peak-to-average power ratio (PAPR) of the OFDM signal. In this paper, we propose the use of hexagonal constellation for PAPR reduction of an OFDM signal. Because hexagonal constellation is the densest packing of regularly spaced points in two dimensions, we can have more signal points in a given area with hexagonal constellation than with quadrature amplitude modulation (QAM) constellation. We can exploit these extra degrees of freedom provided by the hexagonal constellation for PAPR reduction of an OFDM signal. We will apply the proposed technique to eliminate data rate loss due to the side information in partial transmit sequence (PTS) technique and selected mapping (SLM) technique.
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页码：781 / 786
页数：6
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