Abstract
By using a multi-color laser diode carrier with orthogonal polarization and single-carrier modulation, the long-reach single-mode fiber (SMF) passive optical network and millimeter-wave wireless access network (WAN) with carrying narrow-band and channelized discrete multitone (DMT) data format at >1 Gbit/s/channel are demonstrated for 5G wireless mobile applications. For fiber wireline transmission from central office to remote node, the multi-color laser diode is directly encoded by DMT with quadrature amplitude modulation (QAM) levels ranged from 64 to 1024, and the total raw data rate of the received DMT can maintain as high as 88 Gbit/s at a limit modulation bandwidth of 9.125 GHz. The allowable data band consisting of 0.07–6 GHz for 1024 QAM, 6–9 GHz for 512 QAM and 9–9.125 GHz for 256 QAM is achieved even after long-reach transmission in 75-km-long SMF spool. For wireless transmission from remote node to user end with 28-GHz millimeter-wave carrier after optical heterodyne, the wireless transmission distance can lengthen up to 10 meters with allowable data capacity optimized to 29.6 Gbit/s with a modulation bandwidth of 4.1 GHz in total. Consequently, the achievable bit-loaded data band is 256 QAM within 0.07–2.5 GHz and 64 QAM within 2.5–4.1 GHz for 5G mobile WAN transmission via horn antenna pair.
Highlights
With dramatically increasing demand on high-definition data streaming, live video broadcasting, and virtual/augmented reality services, the fifth-generation (5G) wireless mobile networks are urgently demanded to replace the current 4G infrastructure, which can increase the data rate by 10 times for network users at remote nodes [1]–[4]
The analysis reveals that the average signal-to-noise ratio (SNR) is nonlinearly improved from 46 dB to 80 dB with increasing the fast Fourier transform (FFT) size from 512 to 8192
To compromise the loss for long-reach transmission, an additional optical amplifier is usually required for power compensation. In this point of view, we propose an alternative approach with using a colorless laser diode as both the modulator and the optical amplifier
Summary
With dramatically increasing demand on high-definition data streaming, live video broadcasting, and virtual/augmented reality services, the fifth-generation (5G) wireless mobile networks are urgently demanded to replace the current 4G infrastructure, which can increase the data rate by 10 times for network users at remote nodes [1]–[4].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
