Satellite communication has the characteristics of wide coverage and large communication
capacity, and is not easily affected by land disasters. It is quite suitable as a supplement to …

In recent years, low earth orbit (LEO) satellite constellation systems have been developed
rapidly. However, the scarcity of satellite spectrum resources has become one of the major …

With great potential to alleviate spectrum scarcity in the next generation wireless
communication, cognitive satellite terrestrial networks (CSTNs) have attracted considerable …

The number of base stations (BSs) in remote areas is poor, and seamless coverage cannot
be achieved. This paper investigates a cognitive satellite-terrestrial network, including the …

This letter proposes a novel spectrum sensing method for cognitive satellite communications
for detecting primary user signals. First, the useful signal power is estimated from the noisy …

To build the new generation of ubiquitous communication and service integration networks
with “network omnipresence and computing ubiquitous”, it is urgent to improve the in-orbit …

Large-scale satellite constellations lead to a scarcity of spatial spectrum resources,
especially for the overlapped spectrum between Low Earth Orbit (LEO) and Geostationary …

With the rapid development of technologies such as wireless communications and the
Internet of Things (IoT), the proliferation of IoT devices will intensify the competition for …

Due to the increasing spectrum scarcity in satellite communications and terrestrial
communications, cognitive satellite communications have received widespread attention. In …

由于卫星频谱资源日益短缺, 逐渐出现了资源“假性枯竭” 的问题, 但通信系统的频谱利用率却很
低, 因此必须提高卫星网络的频谱利用率. 认知卫星通信能够解决这一问题 …