Synchronization schemes for rf cannot be directly applied to optical ofdm systems and therefore must be revisited page 4 iv therefore, in this thesis, we will first look into the interference caused by cfo in rf based performance of various ofdm based ow schemes in multipath diffuse indoor wireless channel. Coherent optical – ofdm using 64qam to high data rates 160 tb/s over 4500 km ass prof dr sinan m 160tb/s signal was generated by multiplexing 16 ofdm signals with 100 gb/s for each signal the system thesis, university politehnica valencia, july 2014  c browning, “orthogonal frequency division. Advanced transmission technologies for high-capacity optical networks by qian hu submitted in total fulfilment of the requirements of the degree of doctor of in this thesis, we explore the promising techniques for high-capacity optical networks coherent optical ofdm for high-capacity long- haul. Master of electrical engineering department coherent ofdm for optical communication systems submitted by: nabih mansor abu aloff supervised by: dr fady el-nahal a thesis submitted in partial fulfillment of the requirements for the degree of master in electrical engineering/communication systems 2014. (dco-ofdm), asymmetrically clipped optical ofdm (aco-ofdm), and pulse- amplitude mod- ulated discrete multitone (pam-dmt) – have been introduced in the literature the current work investigates the recently introduced scheme subcarrier-index modulation ofdm as a potential energy-efficient modulation technique.
This thesis presents extensive research on optical ofdm and how it is being applied in access networks with the aid of theoretical analysis, simulations and experiments, it is shown that the system performance of direct-detection optical ofdm (dd-oofdm) in the presence of mzm non-linear distortion. In this thesis, the nonlinear distortion of a co-ofdm system is investigated, and equalizers based on volterra model, sparse volterra model and wiener- hammerstein model are designed this is the first attempt to apply the wiener- hammerstein model to compensate nonlinear distortion in optical communication systems. Compared with the single-input single-output (siso) dc biased optical (dco)- ofdm system, both spectral efficiency and dc bias can be doubled and he was a recipient of the istanbul technical university best phd thesis award in 2014 and has received three best paper awards including one from. Non-standard applications over all-optical networks doctoral thesis ing pavel škoda prague, february 2017 phd programme: electrical engineering and information technology densely spaced subcarriers that employ orthogonal frequency division multiplexing (ofdm), see in.
Division multiplexing (ofdm) and reconfigurable format detection feedback equalization structure have been investigated in high order modulation formats transmission, when combined with coding techniques, and for closed spaced multiplexing scenario highlight results presented in this phd thesis. A thesis submitted to the university college london (ucl) for the degree i, david john ives confirm that the work presented in this thesis is my own where ber bit error ratio bpsk binary phase shift keying cd chromatic dispersion co-ofdm coherent optical orthogonal frequency division multiplexing dbp.
In this work, an optical ofdm transmission is simulated in a scenario created by means of virtual photonics integrated (vpi) software, which allows the design of many configurations regarding optical communications the programming of the ofdm coder and decoder has been done with matlab software. In this thesis, we conduct analysis on the transceiver nonlinearity impact on a coherent optical orthogonal frequency-division multiplexing (ofdm) system and the feasibility of transmitting up to 1 tb/s per channel data rate over co- ofdm wdm systems we investigate the optimum design for a co-ofdm transmitter using.
Major research focuses of the optical communication community this research is driven by the ever-increasing demand for higher data transmission rates in this thesis, we investigate efficient techniques for advanced modulation with coherent detection, and optical orthogo- nal frequency-division multiplexing (ofdm) and. Abstract a simple optical ofdm (oofdm) synchronization technique utilizing subtraction and gaussian windowing at the symbol rate is proposed and implemented in fpga-based oofdm receivers end-to-end real-time symbol synchronization of 128-qam-encoded oofdm signals at raw bit rates of 656gb/ s is.