Due to the deployment flexibility and broad coverage capabilities, High Altitude Platform Station is an efficiency solution of communication access for underserved areas like remote areas. However, for some special scenarios, multiple platforms may need to collaborate to overcome the effects of terrain. But the interferences introduced by multiple carriers and access links may hinder the process and restrict its practicability. In order to eliminate these interferences, a proposal on multiple carrier frequency offsets (MCFO) compensation algorithm was provided in this paper. Furthermore, this paper analyzed the lower bound of bit error ratio (BER) for cooperative HAPS systems. Simulation was also carried out, and the results validate the correctness of our theoretical analysis results.

由于部署的灵活性和广泛的覆盖范围，High Altitude Platform Station是一种针对偏远地区等服务不足区域的通信访问的高效解决方案。但是，对于某些特殊情况，可能需要多个平台进行协作以克服地形的影响。但是，多个运营商和接入链路引入的干扰可能会阻碍该过程并限制其实用性。为了消除这些干扰，本文提出了一种多载波频偏补偿算法。此外，本文分析了协作式HAPS系统的误码率下限（BER）。还进行了仿真，结果验证了我们理论分析结果的正确性。