Abstract

In this paper, we consider the polarization division multiplexed (PDM) coherent optical-orthogonal frequency division multiplexing/offset-quadrature amplitude modulation (CO-OFDM/OQAM) system. The problem of channel estimation for this system is investigated. Firstly, we introduce the sparse preamble channel estimation method for PDM CO-OFDM/OQAM and then propose a novel sparse preamble pattern. The interference approximation method is also taken into account for comparison. Simulation results, which are in accordance with the analysis, show that the proposed sparse preamble not only achieves significant gains in terms of bit error rate, but also offers lower peak-to-average power ratio and preamble overhead compared to the available solutions.

© 2018 IEEE

Channel estimation and synchronization for polarization-division multiplexed CO-OFDM using subcarrier/polarization interleaved training symbols

Chun Ju Youn, Xiang Liu, S. Chandrasekhar, Yong-Hwan Kwon, Jong-Hoi Kim, Joong-Seon Choe, Duk-Jun Kim, Kwang-Seong Choi, and Eun Soo Nam
Opt. Express 19(17) 16174-16181 (2011)

Dual-polarization OFDM-OQAM for communications over optical fibers with coherent detection

François Horlin, Jessica Fickers, Philippe Emplit, André Bourdoux, and Jérome Louveaux
Opt. Express 21(5) 6409-6421 (2013)

Experimental demonstration of 110-Gb/s unsynchronized band-multiplexed superchannel coherent optical OFDM/OQAM system

Zhaohui Li, Tao Jiang, Haibo Li, Xuebing Zhang, Cai Li, Chao Li, Rong Hu, Ming Luo, Xu Zhang, Xiao Xiao, Qi Yang, and Shaohua Yu
Opt. Express 21(19) 21924-21931 (2013)

Fast channel estimation and equalization scheme for offset-QAM OFDM systems

Jian Zhao and Paul Townsend
Opt. Express 27(2) 714-728 (2019)

BOMA and OFDM/OQAM modulation for a radio-over-fiber system with enhanced spectral efficiency

Xiaoman Chen, Chang Liu, Laixia Nian, Mengfan Cheng, Songnian Fu, Ming Tang, Deming Liu, and Lei Deng
Opt. Lett. 43(20) 4859-4862 (2018)