Efficient frequency-domain channel equalisation methods for OFDM/OQAM-PON with intensity modulation and direct detection

作     者：Bangjiang Lin Xuan Tang Xi Fang Yi Wu Hui Li 

作者机构：Quanzhou Institute of Equipment Manufacturing Haixi Institutes Chinese Academy of Sciences Fujian People's Republic of China State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University People's Republic of China Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education Fujian Normal University People's Republic of China 

出 版 物：《IET Communications》 

年 卷 期：2017年第11卷第6期

页      面：872-877页

学科分类：0808[工学-电气工程] 08[工学] 

主　　题：frequency-domain analysis channel estimation blind equalisers OFDM modulation quadrature amplitude modulation passive optical networks least mean squares methods frequency-domain channel equalisation method OFDM/OQAM PON intensity modulation direct detection frequency-domain channel estimation adjacent subcarriers frequency-domain averaging ASFA minimum mean squared error MMSE orthogonal frequency division multiplexing-offset quadrature amplitude modulation passive optical network channel transmission response chromatic dispersion induced intrinsic imaginary interference effect 

摘      要：In this study, the authors present efficient frequency-domain channel estimation (CE) methods based on the adjacent subcarriers frequency-domain averaging (ASFA) and minimum mean squared error (MMSE) schemes for the orthogonal frequency division multiplexing/offset quadrature amplitude modulation (OFDM/OQAM) passive optical network (PON) system. The complete channel transmission response for OFDM/OQAM-PON with the chromatic dispersion induced intrinsic imaginary interference effect is systemically derived. Compared with the conventional interference approximation CE method, ASFA and MMSE offer improved receiver sensitivity.