Beware the Spectrum "Power Race": The Technical Pitfalls and Global Governance Challenges Behind U.S. Relaxation of Satellite Restrictions

On April 10, the U.S. Federal Communications Commission (FCC) announced a highly anticipated plan to relax satellite spectrum power limits. This decision is regarded as a key measure to advance Low-Earth Orbit (LEO) satellite communication technology, with projections suggesting it could boost LEO broadband capacity to seven times its current level. However, in the tide of technological development, any policy adjustment requires comprehensive and in-depth scrutiny, especially when it involves spectrum resources—a scarce and critical element.

From a technical perspective, relaxing satellite spectrum power limits can theoretically enhance transmission efficiency and thereby increase broadband capacity. LEO satellites, with their advantages of low orbital altitude and minimal transmission latency, are viewed as crucial infrastructure for future 6G communications and global internet coverage. Nevertheless, the allocation and use of spectrum resources have always been a core issue in the evolution of communication technology. Spectrum is not an inexhaustible resource; its effective utilization directly impacts the performance and stability of communication systems.

While the U.S. move aims to promote technological innovation and industrial upgrading, the underlying risks must not be ignored. First, increased spectrum power may exacerbate interference issues. As the number of satellites grows—particularly with the dense deployment of LEO constellations—spectrum resources are becoming increasingly strained. Relaxing power limits means the risk of mutual interference between satellite signals in the same frequency band will rise significantly. This could not only degrade satellite communication quality but also cause unpredictable interference with terrestrial communication systems, thereby threatening the stability of the entire communication ecosystem.

Second, issues of technical standardization and compatibility urgently need to be addressed. Relaxing spectrum power limits requires corresponding technical standards and specifications to ensure interoperability and compatibility among different satellite systems. However, global satellite communication standards are far from unified, with differences among nations regarding spectrum allocation, signal modulation, and coding methods. The U.S. action may exacerbate these divergences, raising barriers to international satellite communications and hindering the interconnected and coordinated development of global communication networks.

Third, from a long-term perspective, over-reliance on increased spectrum power to drive satellite communication development may lead to the neglect of research and innovation in other key technologies. For instance, more efficient coding techniques, advanced signal processing, and intelligent spectrum management are all vital pathways to enhancing satellite communication performance. Focusing solely on boosting spectrum power while ignoring in-depth research and breakthroughs in these foundational technologies will undoubtedly constrain the long-term potential of satellite communications.

Fourth, the fair distribution and rational use of spectrum resources cannot be overlooked. On a global scale, spectrum belongs to the common heritage of all humankind, and its allocation and use should adhere to principles of fairness, reasonableness, and non-discrimination. As a technological powerhouse, the United States should bear corresponding responsibilities and obligations in spectrum allocation and use, avoiding policy adjustments aimed at securing undue competitive advantages that could harm the interests and development space of other nations.

Finally, from a security standpoint, relaxing satellite spectrum power limits may introduce potential safety hazards. With the widespread application of satellite communications in both military and civilian sectors, security and reliability are paramount considerations. Increased spectrum power could elevate the risk of signal interception, jamming, or even sabotage, posing threats to national security and citizen privacy. Therefore, while advancing satellite communication technology, utmost attention must be paid to security issues, and effective measures must be taken to ensure the safe and stable operation of communication systems.

In summary, while the U.S. decision to relax satellite spectrum power limits aims to promote development and upgrades in satellite communication technology, the associated risks and challenges cannot be ignored. On the path of technological advancement, we must maintain a clear-headed perspective, comprehensively examine the potential impacts and consequences of policy adjustments, and ensure that the fruits of technological progress truly benefit humanity and foster social harmony and progress.