Towards efficient and reconfigurable next-generation optical fronthaul networks for massive MIMO

Tongyun Li; Junfei Xia; Jingfang Gu; Qixiang Cheng; Michael Crisp; Richard Penty

doi:10.1117/12.2607304

3 March 2022 Towards efficient and reconfigurable next-generation optical fronthaul networks for massive MIMO

Tongyun Li, Junfei Xia, Jingfang Gu, Qixiang Cheng, Michael Crisp, Richard Penty

Proceedings Volume 12027, Metro and Data Center Optical Networks and Short-Reach Links V; 120270H (2022) https://doi.org/10.1117/12.2607304
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

This paper summaries our recent research on digital radio over fibre (DRoF) based optical fronthaul links and experimentally demonstrates a novel last-mile wireless coverage system incorporating data compression, time-division multiplexing (TDM) based packetization, and wavelength division multiplexing (WDM) based optical transmission. Compression reduces the fronthaul data rate required per service by a factor of 3 when compared with the common public radio interface (CPRI) standard, enabling efficient radio resource distribution over optical fibre infrastructure. The new packetization mechanism and WDM architecture enable fully reconfigurable resource allocation in a fronthaul network for 20MHz-bandwidth RF inputs with 64x64 MIMO carried over an aggregated compressed optical data rate of 32Gbps using 4 wavelengths. The experimental results show over 40dB RF dynamic range with < 8% error value magnitude (EVM) for the 64 quadrature amplitude modulation (64-QAM) input signals across all the WDM channels while the lowest EVM is less than 2%. Meanwhile, this field-programmable gate array (FPGA) based DRoF system allows flexible, software definable and easy-scalable dynamic antenna resource allocation.

Conference Presentation

Citation Download Citation

Tongyun Li, Junfei Xia, Jingfang Gu, Qixiang Cheng, Michael Crisp, and Richard Penty "Towards efficient and reconfigurable next-generation optical fronthaul networks for massive MIMO", Proc. SPIE 12027, Metro and Data Center Optical Networks and Short-Reach Links V, 120270H (3 March 2022); https://doi.org/10.1117/12.2607304

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