Abstract
A DSP-based cross-channel interference cancellation (CCIC) technique with initial condition-free, fast convergence and signal modulation format independence, is experimentally demonstrated in a two-channel point-to-point digital filter multiple access (DFMA) PON system based on intensity-modulation and direct-detection (IMDD). The CCIC-induced transmission performance improvements under various system conditions are fully investigated for the first time. It is shown that with one iteration only the CCIC technique can achieve a reduction in individual OFDM subcarrier BERs of more than 1000 times, an increase in transmission capacity by as much as 19 times and an increase in optical power budget by as much as 3.5dB. The CCIC technique thus has the potential to drastically improve the transmission performance of DFMA PONs.
Highlights
There are many recently emerging trends significantly impacting internet data traffic, such as the advent of cloud-based computing services [1], the sharp growth in user generated content, the rapidly increasing consumption of on-demand video-centric services [2] and the explosive growth in smart mobile devices [3]
A digital signal processing (DSP)-based cross-channel interference cancellation (CCIC) technique with initial condition-free, fast convergence and signal modulation format independence, is experimentally demonstrated in a two-channel point-to-point digital filter multiple access (DFMA) passive optical networks (PONs) system based on intensity-modulation and direct-detection (IMDD)
The CCICinduced transmission performance improvements under various system conditions are fully investigated for the first time
Summary
Forecast and Methodology, 2015–2020 White Paper. http://www.cisco.com/c/dam/en/us/solutions/collateral/service-provider/global-cloud-index-gci/white-paperc11-738085.pdf. The empowered TV and media consumer’s influence. An Ericsson Consumer Insight Report (2015) https://www.ericsson.com/res/docs/2015/consumerlab/ericsson-consumerlab-tv-media-2015.pdf. E. Mitchell, “Integrated wireless backhaul over optical access networks,” J. M. Tang, “Digital orthogonal filter enabled optical OFDM channel multiplexing for software-reconfigurable elastic PONs,” J. M. Tang, “Digital filter multiple access PONs with DSP-enabled software reconfigurability,” J. M. Tang, “Real-time experimental demonstrations of software reconfigurable optical OFDM transceivers utilizing DSP-based digital orthogonal filters for SDN PONs,” Opt. Express, 22(16), 19674-19685, (2014). M. Tang, “DSP-enabled flexible ROADMs without optical filters and O-E-O conversions,” J. M. Tang, “Multiple Channel Interference Cancellation of Digital Filter Multiple Access PONs,” J.
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