Mode Selection and Spectrum Allocation in Coexisting D2D and Cellular Networks with Cooperative Precoding.

Area of Science:

• Wireless communication networks
• Heterogeneous networks
• Device-to-Device (D2D) communication

Background:

• D2D communication enhances spectral efficiency and reduces latency in cellular networks.
• Heterogeneous networks integrate D2D users with cellular users, posing interference challenges.
• Efficient mode selection is crucial for optimizing performance in D2D-enabled networks.

Purpose of the Study:

• Investigate mode selection strategies for new D2D pairs in D2D-enabled heterogeneous networks.
• Analyze the impact of SINR-based and capacity-based selection rules combined with precoding schemes.
• Determine optimal mode selection for various network scenarios.

Main Methods:

• Proposed two D2D mode selection rules: Signal-to-Interference-plus-Noise-Ratio (SINR)-based and capacity-based.
• Evaluated cooperative block diagonalization (BD) with zero-forcing (ZF) precoding and maximum signal-to-leakage-and-noise-ratio (SLNR) precoding.
• Simulated system performance under diverse network scenarios.

Main Results:

• Cooperative BD with ZF precoding can eliminate interference for new D2D users.
• Maximum SLNR precoding offers a low-complexity alternative with comparable performance.
• SINR-based and capacity-based selection rules exhibit distinct system impacts and tradeoffs.

Conclusions:

• The choice between SINR-based and capacity-based selection rules depends on specific network requirements and performance objectives.
• Maximum SLNR precoding is a practical choice for efficient D2D mode selection.
• Simulation insights guide the selection of the best mode for different use cases.