PAPR Reduction using PTS with Low Computational Complexity in Coherent Optical OFDM Systems

被引：0

作者：

Huynh Vo Trung Dung ^{[1
]}

Bang, Hakjeon ^{[1
]}

Park, Chang-Soo ^{[1
]}

Myong, Seungil ^{[2
]}

机构：

[1] GIST, Sch Informat & Commun, 1 Oryong Dong, Gwangju 560172, South Korea

[2] ETRI, Opt Access Res Team, Daejeon 305350, South Korea

来源：

18TH ASIA-PACIFIC CONFERENCE ON COMMUNICATIONS (APCC 2012): GREEN AND SMART COMMUNICATIONS FOR IT INNOVATION | 2012年

基金：

新加坡国家研究基金会;

关键词：

peak-to-average power ratio (PAPR); partial transmit sequence (PTS); computational complexity; coherent optical OFDM (CO-OFDM); SIGNALS; ALGORITHM; PAR;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In optical communication systems for single-carrier transmission based on orthogonal frequency-division multiplexing (OFDM), high power signals result in fiber nonlinear effects such as self-phase modulation (SPM), which causes inter-symbol interference (ISI) between sub-carriers. To reduce peakto-average power ratio (PAPR) at a transmitter of the optical OFDM system, a partial transmit sequence (PTS) technique can be applied, but it requires reduced computational complexity for practical implementation because the complexity in an optimum search over all combination of phase factors is exponentially increased with the number of sub-blocks. In this paper, a PTS method with low computational complexity is proposed by modifying an artificial bee colony (ABC) algorithm, which is an approach based on solution sets to solve combinatorial and numerical optimization problems. The effectiveness of the proposed method is confirmed by simulation results of complementary cumulative distribution function (CCDF) and BER in a coherent optical OFDM (CO-OFDM) system.

引用

页码：629 / 634

页数：6

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