（图片来源：摄图网） 在当今数字化时代，无线通信技术的每一次进步都深刻地改变着人类的生活和社会的发展。从1G的模拟信 号时代到5G的万物互联，每一次通信技术的迭代都带来了巨大的变革。如今，6G作为下一代无线通信网 络，正逐渐成为全球科技竞争的焦点。 近日，我国科学家在6G通信领域取得了重要突破。历经4年，由北京大学与香港城市大学联合研发的超宽带 光电融合集成系统，首次实现了全频段、灵活可调谐的高速无线通信。目前该成果于8月27日晚在线发表于 《自然》杂志。 传统电子学硬件受限于单一频段设计，难以满足6G时代多样化场景需求。研究团队自主研发出超宽带光电 融合集成系统，通过光电融合技术，利用光子学超大带宽特性突破频率限制，从0.5GHz到115GHz频段的无 缝重构，全频段兼容能力国际领先。实验数据显示，该系统可动态切换频段规避干扰，支持100Gbps级无线 传输速率，足以同时传输1000个8K超高清视频，满足6G的峰值速率要求。而其环境感知与数据传输同步能 力，在智能交通、远程医疗等复杂场景中，可实时构建安全通信链路。 回顾通信技术的发展历程，从2G实现从1G模拟信号时代走向数字时代，到3G推动移动互联网的兴起 ...

Core Viewpoint - The 6G concept sector has shown a significant increase of 4.26%, ranking 7th among concept sectors, with notable stocks experiencing substantial gains [1][2]. Market Performance - As of August 28, the 6G concept sector saw 66 stocks rise, with top performers including Sanwei Communication, Woge Optoelectronics, and Chongda Technology hitting the daily limit up [1]. - The leading gainers in the sector were Dongtian Microelectronics, Mingyang Circuit, and Chuangyuan Xinke, with increases of 15.38%, 8.77%, and 8.68% respectively [1]. - Conversely, stocks such as Qiyuan Er, Zhizhen Technology, and Cixing Co. experienced declines of 3.06%, 1.56%, and 1.14% respectively [1]. Capital Flow - The 6G concept sector attracted a net inflow of 4.422 billion yuan, with 35 stocks receiving net inflows, and 11 stocks exceeding 100 million yuan in net inflow [2]. - ZTE Corporation led the net inflow with 1.352 billion yuan, followed by Hengtong Optoelectronics, Huagong Technology, and Sanwei Communication with net inflows of 615 million yuan, 515 million yuan, and 482 million yuan respectively [2]. Stock Performance Metrics - Notable stocks in the 6G concept sector included: - ZTE Corporation: 7.53% increase, 8.77% turnover rate, and a net inflow of 1.351 billion yuan [3]. - Hengtong Optoelectronics: 8.52% increase, 10.09% turnover rate, and a net inflow of 615 million yuan [3]. - Huagong Technology: 5.78% increase, 10.30% turnover rate, and a net inflow of 515 million yuan [3]. - Sanwei Communication: 10.06% increase, 12.91% turnover rate, and a net inflow of 481 million yuan [3]. Additional Insights - The highest net inflow ratios were observed in Sanwei Communication (52.53%), Teifa Information (25.21%), and Woge Optoelectronics (22.87%) [3].

Group 1 - Japan's net investment in the US for 2024 is projected to reach 11.7 trillion yen, marking a historical high, while investments in China have not increased [1][2] - Japanese companies are accelerating investments in the US, with net foreign direct investment reaching 31.6325 trillion yen, a 17.1% increase from the previous year, the highest since 1996 [2][4] - Japanese investments in ASEAN are also rising significantly, with an estimated 4.4 trillion yen in 2024, a 36% increase from the previous year [4] Group 2 - Japanese investment in China is projected to be only 493.1 billion yen in 2024, remaining stable compared to 2023, and down nearly 60% from ten years ago [4][11] - The depreciation of the yen by 7.8% against the dollar in 2024 has not deterred Japanese companies from increasing foreign investments [6] - Japanese companies are focusing on high-tech investments in the US, with 70% of investments concentrated in AI, biomedicine, and new energy vehicles [10] Group 3 - The US market's appeal is driven by its large consumer base of 330 million people and high per capita consumption, prompting companies like Toyota to invest significantly in the US [9][10] - Japan's investment in the US has increased from 29% in 2014 to 39% in 2024, while investment in China has decreased from 22% to 7% [13] - Japan plans to increase high-tech investments in the US to 8 trillion yen annually by 2030, focusing on quantum computing and space economy [13]