2026年通信行业投资策略报告：聚焦AI算力供不应求和新技术演进，低轨卫星进入景气周期-20251217

Group 1 - The communication sector experienced a significant increase in valuation, with the communication index rising by 73.0% in 2025, ranking second among 31 primary industries in the Shenwan classification [1][15][24] - The growth in the communication industry is primarily driven by AI computing power, leading to accelerated technological iterations and scale growth across the entire AI computing power supply chain [1][15] - The report emphasizes the focus on the supply-demand imbalance in AI computing power and the evolution of new technologies, particularly the entry of low-orbit satellites into a prosperous cycle [1][2] Group 2 - AI computing power is entering a new stage, with structural changes expected in 2026, including a shift in demand from training to inference computing power [2][26] - The capital expenditure (Capex) investment structure is stabilizing among leading cloud providers, with second-tier cloud providers beginning to join the market [2][35] - The architecture of computing power networks is evolving, with scale-up and scale-across strategies contributing to increased network demand [2][42] Group 3 - The optical interconnection sector is facing supply-demand imbalances, particularly in optical modules, optical chips, and Faraday rotators, with a focus on technological trends such as 1.6T, silicon photonics, OCS, and CPO [3][51][54] - The liquid cooling market is at a historic turning point, with significant demand in North America, Southeast Asia, and China, particularly driven by the North American computing power market [3][11] - The IDC industry is expected to maintain an expansion trend driven by AI development, with an increase in AIDC penetration rates anticipated for 2026 [4][11] Group 4 - The report highlights the importance of breakthroughs in rocket capacity as a key variable for the commercial aerospace industry in China, with low-orbit satellite internet expected to enter an accelerated prosperity phase [1][11][24] - The commercial aerospace industry is a key focus area supported by national policies, with significant growth potential anticipated as satellite and computing power converge for space data processing [11][24][25] - The report suggests monitoring the success rates of various rocket models and their capacity planning as the industry matures [11][24]