Analysis of CDMA Capacity for Multiple Stratospheric Platform Mobile Communications under Imperfect Power Control and Fading

We propose an analysis of CDMA multispot beam for reverse link multiple stratospheric platforms (SPF). Evaluation on the CDMA system capacity of this technology has not been much reported especially for multiple SPF scenarios. This paper addresses all possible multiple access interference including the effects of channel fading and shadowing in order to evaluate the system capacity. The analysis is based on perfect power control and imperfect power control. The results indicate that in SPF systems the reverse link CDMA capacity is significantly reduced because of the power control imperfections. In multiple SPF model the interference caused by the users in overlapped region is not trivial. Because of this problem the capacity is reduced for both speech and real-time data applications even though the assumption of perfect power control can be made.