Satellite communication system is expected to play a vital role for realizing various remote
Internet-of-Things (IoT) applications in sixth-generation vision. Due to unique characteristics …

In this paper, we investigate the downlink transmission of a non-orthogonal multiple access
(NOMA)-based integrated terrestrial-satellite network, in which the NOMA-based terrestrial …

Integrated satellite-terrestrial communications networks aim to exploit both the satellite and
the ground mobile communications, thus providing genuine ubiquitous coverage. For 5G …

This paper deals with the crucial issue of random access (RA) preamble design and
detection for fifth generation new radio (5G NR) enabled satellite communication systems. In …

Reasonable design and effective detection of the random access preamble has become a
challenging task due to the unique characteristics of mobile satellite communications. To …

Robust time and frequency synchronization is an essential requirement for initial access in
LEO satellite communication systems. However, large doppler frequency shift in LEO …

Integrated satellite-terrestrial communications networks aim to exploit both the satellite and
the ground mobile communications and thus provide genuine ubiquitous coverage. For 5G …

Orthogonal Frequency Division Multiplexing (OFDM) has been proposed for Satellite-ground
data transmission system, taking the advantage of its high spectral efficiency. Unlike …

Absolute time synchronization is a basic issue in wireless communication. With the advent of
5G, many emerging vertical industry applications have put forward demands for timing …

A novel random access (RA) preamble format is proposed in this paper to support fifth
generation new ratio (5G NR) enabled satellite system, which is a low earth orbiting (LEO) …