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This paper reviews regulatory status for high altitude platform station (HAPS) mainly focusing on frequency bands identified for user links and considered for the use by gateway links. One of the pending issues of frequency sharing of HAPS gateway links with other radiocommunication services is the consideration of interference impact on a space station due to HAPS gateway uplinks. Taking into account...
In this paper, we provide a method to estimate the capacity of the wideband code division multiple access (WCDMA) scheme using High Altitude Platform Stations (HAPS), and demonstrate the results. This is to validate that the HAPS system is one of the most effective solutions to provide high quality wireless communication services, such as IMT-2000 services. We use a practical system model which describes...
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