title: SSBI mitigation at 60GHz OFDM-ROF system based on optimization of training sequence.
abstract: We have theoretically and experimentally investigated the effect of the interference between subcarrier-signal beat interference (SSBI) in 60 GHz orthogonal frequency division multiplexing - radio-over-fiber (OFDM-ROF) system. In order to reduce the influence of SSBI, we compared four kinds of OFDM frames with different training sequences as all-real, all-complex, complex-zero and real-zero training. The experimental results show the power penalty of all-real, all-complex, complex-zero and real-zero training is 2.5, 5.5, 4 and 1dB at BER of 1x10(-3) after 20 km standard single mode fiber (SMF) transmission, respectively. The real-zero training OFDM frame with interleave structure and lower modulation order signal suffered from the least SSBI shows the best performance.
authors.affiliation: Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Information Science and Engineering, Hunan University, Changsha, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yu
authors.forename: Zizheng
authors.initials: Z
authors.lastname: Cao
authors.forename: J
authors.initials: J
authors.lastname: Xiao
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D012031:Refractometry / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*