Recently, research on sixth-generation (6G) networks has gained significant interest. 6G is expected to enable a wide-range of applications that fifth-generation (5G) networks will not be able to serve reliably, such as tactile Internet. Additionally, 6G is expected to offer Terabits per second (Tbps) data rates, 10 times lower latency, and near 100% coverage, compared to 5G. Thus, 6G is expected to expand across all available spectrums including terahertz (THz) and optical frequency bands. In this manuscript, mixed-carrier communication (MCC) is investigated as a novel physical layer (PHY) design for 6G networks. The proposed MCC version in this study is based on visible light communication (VLC). MCC enables a unified transmission PHY design to connect devices with different complexities, simultaneously. The design trade-offs and the required signal-to-noise ratio (SNR) per individual modulation schemes embedded within MCC are investigated. The complexity analysis shows that a conventional optical OFDM receiver can capture the high-speed bit-stream embedded within MCC. For a forward error correction (FEC) bit-error-rate (BER) threshold of $3.8\times {10}^{-3}$, MCC is optimized to maximize the spectral efficiency by embedding 2-beacon phase-shift keying (2-BnPSK) within an MCC envelope on top of 12 bits per beacon position modulation (BPM) symbol.

中文翻译：

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用于技术分工复用的混合载波通信

最近，对第六代 (6G) 网络的研究引起了极大的兴趣。6G 有望实现第五代 (5G) 网络无法可靠服务的广泛应用，例如触觉互联网。此外，与 5G 相比，6G 有望提供每秒太比特 (Tbps) 的数据速率、低 10 倍的延迟和接近 100% 的覆盖率。因此，预计 6G 将扩展到所有可用频谱，包括太赫兹 (THz) 和光频段。在本手稿中，混合载波通信 (MCC) 作为 6G 网络的一种新型物理层 (PHY) 设计进行了研究。本研究中建议的 MCC 版本基于可见光通信 (VLC)。MCC 支持统一的传输 PHY 设计，以同时连接具有不同复杂性的设备。研究了嵌入在 MCC 中的每个单独调制方案的设计权衡和所需的信噪比 (SNR)。复杂度分析表明，传统的光 OFDM 接收器可以捕获嵌入在 MCC 中的高速比特流。对于前向纠错 (FEC) 误码率 (BER) 阈值$3.8\times {10}^{-3}$，MCC 被优化以通过在每个信标位置调制 (BPM) 符号 12 位之上的 MCC 包络内嵌入 2 信标相移键控 (2-BnPSK) 来最大化频谱效率。