Joint Beamforming and Power Allocation for Satellite-Terrestrial Integrated Networks With Non-Orthogonal Multiple Access

Abstract

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Placement and Power Allocation for NOMA-UAV Networks

“…With the optimal location of UAV in (15), the sum rate can be further maximized by PA at the UAV among users. According to (6b), a minimum transmission rate should be satisfied by each user.…”

“…In [14], a unified framework was proposed to study UAV networks assisted by NOMA. The beamforming and PA were jointly optimized for satellite-terrestrial networks with NOMA in [15]. NOMA was utilized to reduce the transmission latency for short-packet communications in [16].…”

Multicast Beamforming Optimization in Cloud-Based Heterogeneous Terrestrial and Satellite Networks

“…By contrast, the non-absorptive effects, such as tropospheric scintillation, may result in rapid magnitude and phase fluctuation. Since the above-mentioned impairments have a significant impact on the attainable performance of satellite systems, substantial research efforts have to be invested in developing powerful mitigation techniques [4,18,21,22]. For example, on-board beamforming aided satellite communication systems are capable of providing near-constant received power for users on the ground by shaping the beamforming pattern, even in the face of rain attenuation [?…”

“…Multicast beamforming aided satellite communications was also investigated in [28,29]. Recently, a joint beamforming and power allocation scheme was proposed for non-orthogonal multiple access (NOMA) based TSNs, showing that an improved sum-rate performance can be achieved [22]. In general, the abovementioned beamforming design problems can be formulated as quadratically constrained quadratic programs (QCQPs) [30].…”

On the secrecy performance of integrated satellite‐aerial‐terrestrial networks

“…Because of the potential of providing wide coverage, long‐distance communication, and high‐speed broadband access, satellite communication (SatCom) has been widely applied in various fields, such as broadcasting, navigation, and global communication . However, the obstacles, shadowing and masking between satellite and terrestrial terminals, often seriously affect the quality of the line‐of‐sight (LoS) communications and deteriorate the wireless transmission reliability.…”