Experimental demonstration of the transmission performance for LDPC-coded multiband OFDM ultra-wideband over fiber system

作     者：He, Jing Wen, Xuejie Chen, Ming Chen, Lin Su, Jinshu 

作者机构：Hunan Univ Coll Comp Sci & Elect Engn Changsha 410082 Hunan Peoples R China Natl Univ Def Technol State Key Lab Parallel & Distributed Proc Changsha Hunan Peoples R China Natl Univ Def Technol Sch Comp Changsha Hunan Peoples R China 

出 版 物：《OPTICAL FIBER TECHNOLOGY》 (光纤技术)

年 卷 期：2015年第21卷

页      面：122-127页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China [61307087, 61377079] Hunan Provincial Natural Science Foundation of China [12JJ3070] Fundamental Research Funds for the Central Universities Young Teachers Program of Hunan University 

主　　题：Multiband ultra-wideband (MB-UWB) Low-density parity-check (LDPC) Orthogonal frequency-division-multiplexing (OFDM) Receiver sensitivity 

摘      要：To improve the transmission performance of multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) over optical fiber, a pre-coding scheme based on low-density parity-check (LDPC) is adopted and experimentally demonstrated in the intensity-modulation and direct-detection MB-OFDM UWB over fiber system. Meanwhile, a symbol synchronization and pilot-aided channel estimation scheme is implemented on the receiver of the MB-OFDM UWB over fiber system. The experimental results show that the LDPC pre-coding scheme can work effectively in the MB-OFDM UWB over fiber system. After 70 km standard single-mode fiber (SSMF) transmission, at the bit error rate of 1 x 10(-3), the receiver sensitivities are improved about 4 dB when the LDPC code rate is 75%. (C) 2014 Elsevier Inc. All rights reserved.