Power efficiency improvement by PAPR reduction and predistorter in MIMO-OFDM system

被引:0
作者
Trang, NTT [1 ]
Han, T [1 ]
Kim, N [1 ]
机构
[1] Chungbuk Natl Univ, Dept Informat & Comp Engn, Cheongju 361763, South Korea
来源
7TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY, VOLS 1 AND 2, PROCEEDINGS | 2005年
关键词
MIMO-OFDM; STBC; nonlinear HPA; power efficiency; PAPR; PARTIAL TRANSMIT SEQUENCES; RATIO; MODULATION;
D O I
10.1109/ICACT.2005.246228
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
This paper analyzes the performance of selected mapping and partial transmit sequences in the multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDNI) system using a space-time block code. The phase rotation vector, which is transmitted as a side information, are considered. Simulation results show that the PAPR is decreased about 5 dB in the PTS, and about 3.5 dB in SLM, compared with the original MIMO-OFDM system, when QPSK is used. In order to conform to the linear amplifier, the input back off (IBO) of 4 dB is required for the PTS, and the IBO of 6 dB for the SLM due to the predistorter. Without the SLM or the PTS, the 1130 of about 8 dB is needed.
引用
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页码:1381 / 1386
页数:6
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