| Title |
Next-Generation Optical Wireless System For 5G And Beyond |
| ID_Doc |
39236 |
| Authors |
Pottoo S.N.; Goyal R.; Gupta A.; Rani M. |
| Year |
2022 |
| Published |
Broadband Connectivity in 5G and Beyond: Next Generation Networks |
| DOI |
http://dx.doi.org/10.1007/978-3-031-06866-9_6 |
| Abstract |
We design and demonstrate a coherent optical wireless communication link for data center interconnections and 5G services in smart cities. The adoption of a single modulated laser scheme as optical transmitter and homodyne detection-based receiver guarantees conceptual simplicity for the optoelectronic subsystems of this optical backhaul network. The realization of signal carrier transmission reduces the cost and complexity of the proposed transceiver which further allows to off-load the data in the radio signal chain to the radio frequency domain for the period of severe fog attenuation conditions. We prove this concept for an outdoor link and show that transmission of polarization division multiplexing optical signals with 16-point quadrature amplitude modulation format is possible at 140 Gbps over an estimated reach of 5.80 km in case of fair atmospheric conditions. We have implemented nine-phase digital impairment compensation algorithms strategically after coherent detection and before the signal decoding to mitigate transmission impairments and compensate for atmospheric loss. The transceiver performance has been numerically evaluated with regard to bit error rate (BER ≤2 × 10-3, i.e., FEC limit), error vector magnitude, optical signal-to-noise ratio (OSNR), laser linewidth, receiver sensitivity, and constellation diagrams. A higher data rate with tolerable OSNR and power requirements for 5G applications (above 6 GHz) has been verified in this work. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2022. |
| Author Keywords |
Coherent detection; Digital signal processing (DSP); Fifth generation (5G); Free-space optical communication (FSOC); Green communication; Polarization division multiplexing (PDM); Quadrature amplitude modulation (QAM); Smart cities |
