Scoring the Terabit/s Goal:Broadband Connectivity in 6G

Abstract

This paper explores the road to vastly improving the broadband connectivity in future 6G wireless systems. Different categories of use cases are considered, with peak data rates up to 1 Tbps. Several categories of enablers at the infrastructure, spectrum, and protocol/algorithmic levels are required to realize the intended broadband connectivity goals in 6G. At the infrastructure level, we consider ultra-massive MIMO technology (possibly implemented using holographic radio), intelligent reflecting surfaces, user-centric cell-free networking, integrated access and backhaul, and integrated space and terrestrial networks. At the spectrum level, the network must seamlessly utilize sub-6 GHz bands for coverage and spatial multiplexing of many devices, while higher bands will be mainly used for pushing the peak rates of point-to-point links. Finally, at the protocol/algorithmic level, the enablers include improved coding, modulation, and waveforms to achieve lower latency, higher reliability, and reduced complexity.

Submitted to IEEE Access. 51 pages,31 figures. arXiv admin note: text overlap with arXiv:2004.14247

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• Little or no equalization is needed in energy-efficient sub-THz mobile access
• Tensor-Based Channel Estimation and Data-Aided Tracking in IRS-Assisted MIMO Systems
• A Comprehensive Overview on 5G-and-Beyond Networks with UAVs: From Communications to Sensing and Intelligence
• Latency-Constrained Highly-Reliable mmWave Communication via Multi-point Connectivity
• Coverage and Rate Analysis in Coexisting Terahertz and RF Finite Wireless Networks
• Tensor-based modeling/estimation of static channels in IRS-assisted MIMO systems
• Joint Scheduling and Throughput Maximization in Self-backhauled Millimeter Wave Cellular Networks