Xiang-Gen Xia

This book investigates the most advanced theories and methodologies of array beamforming, with a focus on antenna array enabled wireless communication technology.Combining with the current development needs and trends of wireless communication technology around the world, the authors explore the potentials and challenges of large-scale antenna array beamforming technology in next-generation mobile communication and some important emerging application scenarios. The book first introduces the basic structure of antenna array hierarchical codebook and channel estimation with high dimensionality, with which the time cost of searching the channel information can be effectively reduced. It then explicates high-efficiency beamforming transmission methods for point-to-point transmission, full-duplex point-to-point transmission, and point-to-multipoint transmission where array beamforming enabled non-orthogonal multiple access (NOMA) technologies for typical two-user systems and general multi-user systems are emphasized. The book also discusses array beamforming enabled unmanned aerial vehicle (UAV) communications and array beamforming enabled space/air/ground communications, with the uniqueness and relative solutions for single UAV systems and multi-UAV networks being analyzed.This will be a vital reference for researchers, students, and professionals interested in wireless communications, array beamforming, and millimeter-wave communications.

This book investigates the most advanced theories and methodologies of array beamforming, with a focus on antenna array enabled wireless communication technology.Combining with the current development needs and trends of wireless communication technology around the world, the authors explore the potentials and challenges of large-scale antenna array beamforming technology in next-generation mobile communication and some important emerging application scenarios. The book first introduces the basic structure of antenna array hierarchical codebook and channel estimation with high dimensionality, with which the time cost of searching the channel information can be effectively reduced. It then explicates high-efficiency beamforming transmission methods for point-to-point transmission, full-duplex point-to-point transmission, and point-to-multipoint transmission where array beamforming enabled non-orthogonal multiple access (NOMA) technologies for typical two-user systems and general multi-user systems are emphasized. The book also discusses array beamforming enabled unmanned aerial vehicle (UAV) communications and array beamforming enabled space/air/ground communications, with the uniqueness and relative solutions for single UAV systems and multi-UAV networks being analyzed.This will be a vital reference for researchers, students, and professionals interested in wireless communications, array beamforming, and millimeter-wave communications.

在过去COVID-19新冠肺炎的疫情期间，作者宅家三年，基本没有走出过特拉华州的纽瓦克市，她只是一个只有一所大学的小城。由于网络的发达，即使呆在家里也能了解世界上的各种事情。只是这个瘟疫的时间太长了，有很多人早已失去了耐心。在网上可以看到，已经有不少人早已回到了往常的生活，照样游遍世界。他们贴出来的都是世界各地的各种山山水水、各种气势宏伟的宏观照片，实实的美不胜收。作者是一个保守的人，在过去三年时间里，作者只宅在家中，照的所有照片都是微观的。照遍了我家周围的每一个角落，每一颗青草，每一片叶子。作者把自己的所有照片都放大到手机的最大屏，总是想从细节里发现点什么新玩意儿，然后就是憋不住地把她们都写下。作者没有远去，没有去山边，也没有去河畔。就在自己家屋里和屋外的周围转悠，直至和飞来的每只鸟都熟悉，和飞走的每只鸟都说声再见！本诗词集就是集作者在过去的疫情三年内宅家所见所闻所感后所写的诗和词，有古体也有自由体。希望将来能"无须老来一壶酒，慢读此书慰风尘"。

A study of modulated coding (MC), a technique for intersymbol interference (ISI) mitigation. It discusses MC when the ISI is known at both transmitter and receiver, and when only the receiver knows the ISI. It showcases polynomial antiquity resistant modulated coding, and provides an examination of transmitter-assisted ISI equalization.