Nonlinear Companding Transform Using hyperbolic tangent function in OFDM Systems

被引：0
|
作者：
Wang, Y. [1 ]
Ge, J-H. [1 ]
Wang, L-H. [1 ]
Ai, B. [2 ]
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Network, Xian 710071, Peoples R China
[2] Beijing Jiaotong Univ, State Key Lab RCS, Beijing, Peoples R China
来源：
2012 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING (WICOM) | 2012年
关键词：
OFDM; PAPR; NCT; Hyperbolic tangent; AVERAGE POWER RATIO; PAPR REDUCTION;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A new nonlinear companding transform (NCT) scheme is proposed to reduce the peak-to-average power ratio (PAPR) of transmitted signals in orthogonal frequency division multiplexing (OFDM) systems. Its companding transfer curve is based on the specified hyperbolic tangent function. By compressing large amplitude signals while enhancing small ones simultaneously, this scheme can obtain an effective reduction of PAPR with a low bit error rate (BER) degradation. A theoretical performance analysis regarding the achievable PAPR reduction and transform gain are provided. Simulations demonstrate the effectiveness and robustness of the proposed scheme.
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页数：4
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