The Research Of MB-OFDM UWB Technology Under The Multimode Fiber

MB-OFDM UWB is one of the UWB two mainstream standards, the technologycontains the OFDM and the UWB two major technologies’ advantages, can satisfythe nowadays people’s requirements to the communication, which are highcommunication quality, high bandwidth, the high bit rate. Multimode fiber not onlyhas high bandwidth and low decline, anti-jamming performance good, and many otheradvantages, but also has simple operation, low cost of the enormous advantage inpractical application. The research of MB-OFDM UWB technology under themultimode fiber, the aim is to realize the complementary advantages of the twotechnologies. Therefore, the subject has a very high research and application value.This article mainly has the following several aspects:(1) This paper introduced the UWB technology development history, studied theMB-OFDM UWB basic principle and key technology.(2) Introduced the multimode fiber related theory, mainly illustrated andanalyzed multimode fiber’s mode dispersion principles. Mode dispersion problem isthe most main factors of multimode fiber transmission properties, so MB-OFDMUWB technology can be a good application in multimode fiber or not, the mostimportant is to see if it can be very good overcome multimode fiber dispersion of themodel.(3) Theoretically proved the technology for multimode fiber mode dispersionhave very good resistance, which combined with MB-OFDM UWB technologycharacteristics. In order to make the theoretical analysis more convincing, this paperapply MATLAB and Optisystem simulation software built experimental simulationplatform, and the simulation results confirm the validity of the which illustrates theMB-OFDM UWB technology and multimode fiber combination is feasible. (4) Through the study and research of multimode fiber communication systemknowledge, we know that existing of nonlinear distortion problem in the systemprevents MB-OFDM UWB signal’s reliable transmission, so in this paper, weanalysed the nonlinear problems. And deeply research MZ modulator’s nonlinearmodulation, and puts forward using PAPR suppression algorithm to adjustMB-OFDM UWB signal to solve the above problems, and through the experimentalsimulation results prove the feasibility of this method.