The paper "Next Generation Advanced Transceiver Technologies for 6G and Beyond" by Changsheng You, Yunlong Cai, Yuanwei Liu, Marco Di Renzo, Tolga M. Duman, Aylin Yener, and A. Lee Swindlehurst explores the evolution of next-generation advanced transceivers (NGAT) for 6G and beyond. The authors highlight the stringent performance requirements of 6G, including peak data rates up to 1 Tbps, and the need for efficient signal transmission and reception. They discuss three main perspectives on NGAT: new-field NGAT, which shifts from far-field to near-field channel models; new-form NGAT, including reconfigurable intelligent surfaces (RISs), flexible antennas (FAs), and holographic MIMO (HMIMO); and new-metric-aware NGAT, which incorporates semantic communications. The paper provides an overview of near-field transceiver designs, focusing on system models and transceiver design challenges. It introduces new near-field channel models that account for spherical wavefronts and spatial non-stationarity. The authors discuss the design of near-field beamforming, beam training, and channel estimation, highlighting the challenges and solutions in each area. They also explore the use of hybrid beamforming to balance performance and hardware/energy costs, and the importance of efficient beam training and channel estimation methods in near-field scenarios. Finally, the paper outlines future research directions, including the development of hybrid-field communications and the integration of AI and communication for advanced applications. The authors aim to provide a comprehensive overview of NGAT technologies, their design challenges, and current state-of-the-art, while identifying open problems for future research.The paper "Next Generation Advanced Transceiver Technologies for 6G and Beyond" by Changsheng You, Yunlong Cai, Yuanwei Liu, Marco Di Renzo, Tolga M. Duman, Aylin Yener, and A. Lee Swindlehurst explores the evolution of next-generation advanced transceivers (NGAT) for 6G and beyond. The authors highlight the stringent performance requirements of 6G, including peak data rates up to 1 Tbps, and the need for efficient signal transmission and reception. They discuss three main perspectives on NGAT: new-field NGAT, which shifts from far-field to near-field channel models; new-form NGAT, including reconfigurable intelligent surfaces (RISs), flexible antennas (FAs), and holographic MIMO (HMIMO); and new-metric-aware NGAT, which incorporates semantic communications. The paper provides an overview of near-field transceiver designs, focusing on system models and transceiver design challenges. It introduces new near-field channel models that account for spherical wavefronts and spatial non-stationarity. The authors discuss the design of near-field beamforming, beam training, and channel estimation, highlighting the challenges and solutions in each area. They also explore the use of hybrid beamforming to balance performance and hardware/energy costs, and the importance of efficient beam training and channel estimation methods in near-field scenarios. Finally, the paper outlines future research directions, including the development of hybrid-field communications and the integration of AI and communication for advanced applications. The authors aim to provide a comprehensive overview of NGAT technologies, their design challenges, and current state-of-the-art, while identifying open problems for future research.