Capacity Analysis of Hybrid Satellite-Terrestrial Systems with Selection Relaying

Area of Science:

• Wireless communication systems
• Information theory
• Signal processing

Background:

• Land mobile satellite systems face performance degradation due to multipath effects, obstacles, and atmospheric losses.
• Hybrid satellite-terrestrial relay networks offer a flexible solution to enhance system reliability.
• Fading channels significantly impact the stability and performance of wireless communication links.

Purpose of the Study:

• To analyze the performance of a hybrid satellite-terrestrial relay network employing selection relaying.
• To derive exact closed-form expressions for outage probability, outage capacity, and ergodic capacity.
• To evaluate the effectiveness of selection relaying under shadowed Rice and Nakagami-m fading conditions.

Main Methods:

• Mathematical modeling of a hybrid satellite-terrestrial relay network.
• Derivation of performance metrics using shadowed Rice and Nakagami-m fading models.
• Development of a fading simulator for independent result verification.

Main Results:

• Exact closed-form expressions for outage probability, outage capacity, and ergodic capacity were derived.
• The derived expressions are presented in a polynomial-exponential form suitable for integer-valued fading parameters.
• Numerical results demonstrate the benefits of selection relaying across various propagation scenarios and system geometries.

Conclusions:

• Selection relaying is a valuable protocol for improving the performance of hybrid satellite-terrestrial relay networks.
• The analytical results provide a robust framework for system design and optimization.
• The study's findings are validated through independent simulations, ensuring reliability.