Complementary peak reducing signals for TDCS PAPR reduction
Complementary peak reducing signals for TDCS PAPR reduction
复制标题
用于降低 TDCS PAPR 的互补峰值降低信号
DOI:
10.1049/iet-com.2016.0814
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发表时间:
2017-01
影响因子:
1.6
通讯作者:
Tao Ran
中科院分区:
文献类型:
--
作者:
Chang Cheng;Huan Hao;Guo Jianmin;Tao Ran
Transform domain communication systems (TDCSs) are cognitive anti-interference multi-carrier communication systems with dynamic spectrum access. The inherent high peak-to-average power ratio (PAPR) of TDCS reduces the efficiency of the power amplifier. Adaptive waveform generation of the TDCS also causes the PAPR to vary according to the spectral conditions on hand. In this study, a complementary peak reducing signal (CPRS) method is proposed and analysed. It uses all unoccupied frequency bins to transmit data and uses all interfered frequency bins to generate CPRSs. Every data signal and its corresponding CPRS are orthogonal and complementary, so as to fully occupy all frequency bins. Therefore, the PAPR reduction of the composite signal with all frequency bins is considered. Once the optimal pseudo-random phase sequence is determined, the sequence can adapt to all spectral conditions without side information, and the computational complexity for diverse spectral conditions is greatly reduced. Moreover, the orthogonality between the data signal and its CPRS in the frequency domain eliminates distortions and spectral spreading. As a component of the transmitting signal, CPRS may cause bit error rate (BER) loss. This study also proposes a signal power adjustment mechanism to achieve a compromise between PAPR reduction and BER loss.
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影响因子:
8.3
作者:
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通讯作者:
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DOI:
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期刊:
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发表时间:
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IET Signal Process.
影响因子:
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通讯作者:
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