通信行业周报：亚马逊公布下一代3nm AI训练芯片，中国成功发射千帆极轨03组卫星

Investment Rating - The report maintains an "Overweight" rating for the communication industry [4]. Core Views - Amazon has announced the next generation of 3nm AI training chips, claiming a 30-40% cost-performance improvement over current GPU-based instances. The new Trainium3 chip is expected to deliver four times the performance of its predecessor, with initial instances available by the end of 2025. This ongoing iteration of AI chips is anticipated to benefit the communication-related industry chain [14][16]. - China successfully launched the Qianfan Polar Orbit 03 satellite group, increasing the number of satellites in the Qianfan constellation to 54. This development is expected to benefit the related industry chain as the satellite internet plan progresses [15]. - Strong AI demand has driven growth for Marvell Technology, with a 19% quarter-over-quarter sales increase to $1.52 billion, surpassing Wall Street expectations. The company anticipates fourth-quarter revenue of approximately $1.8 billion, driven by robust AI demand [16]. Summary by Sections 1. Core Views and Investment Recommendations - The report highlights the advancements in AI training chips by Amazon and the successful satellite launch by China, both of which are expected to positively impact the communication industry [14][15]. - Investment recommendations include focusing on sectors such as computing optical communication, satellite communication navigation, and communication equipment, with specific companies suggested for each sector [17]. 2. Market Review - The A-share Shenwan Communication Index rose by 1.97% from December 2 to December 6, outperforming the CSI 300 Index by 0.53 percentage points [20]. - Within the Shenwan secondary industry, communication equipment saw a 2.21% increase, while communication services rose by 1.47% [22]. 3. Industry News - Shanghai aims to achieve large-scale 5G applications by 2026, with a focus on integrating AI and enhancing application capabilities [37]. - The Ministry of Industry and Information Technology reported that over 4.1 million 5G base stations have been built and opened in China, with applications expanding across various sectors [40]. 4. Company Dynamics - Companies like Zhongji Xuchuang and Tianfu Communication are preparing for product shipments and maintaining normal order conditions, respectively [42].