Throughput Analysis of Buffer-Aided Decode-and-Forward Wireless Relaying with RF Energy Harvesting

Area of Science:

• Wireless communication systems
• Relaying networks
• Energy harvesting technologies

Background:

• Investigated buffer-aided decode-and-forward (DF) wireless relaying systems.
• Source and relay harvest radio-frequency (RF) energy for transmissions.
• Operates over fading channels.

Purpose of the Study:

• Derive exact expressions for end-to-end throughput in DF relaying systems.
• Analyze throughput and energy efficiencies for half-duplex (HD) and full-duplex (FD) schemes.
• Evaluate performance under varying self-interference (SI) cancellation and relay locations.

Main Methods:

• Mathematical derivation of throughput expressions.
• Numerical analysis of system performance.
• Comparison of HD and FD relaying strategies.

Main Results:

• Exact throughput expressions were derived for HD and FD relaying.
• Performance was illustrated under different SI cancellation levels and relay positions.
• Throughput-optimal relaying was shown not to be energy efficiency-optimal.

Conclusions:

• Relaying network deployment and operation strategies can be optimized.
• Guidance provided for balancing throughput and energy efficiency.
• Findings applicable to diverse performance criteria in wireless networks.