Performance analysis of improved path loss models for millimeter-wave wireless network channels at 28 GHz and 38 GHz

Area of Science:

• Wireless Communications
• Electromagnetics
• Signal Propagation

Background:

• Path loss is critical for millimeter wave (mmWave) network deployment, design, and performance assessment.
• Accurate path loss models are essential for high-fidelity wireless channel performance evaluation.
• Existing statistical and empirical models require further refinement for mmWave frequencies.

Purpose of the Study:

• To validate and assess improved versions of the Close In (CI) and Floating Intercept (FI) path loss models.
• To evaluate model performance at 28 and 38 GHz frequency bands in an enclosed environment.
• To analyze the impact of antenna polarization on path loss prediction accuracy.

Main Methods:

• Validation of enhanced CI and FI path loss models using measurement data.
• Testing in an enclosed passageway with Vertical-Horizontal (V-H) and Vertical-Vertical (V-V) antenna polarizations.
• Analysis of Mean Prediction Error (MPE) and Standard Deviation Error (SDE) for model accuracy assessment.

Main Results:

• Enhanced CI and FI models demonstrate superior consistency and accuracy compared to standard models.
• Significant improvements in path loss prediction were observed across different antenna polarizations.
• Improved models exhibit better parameter responsiveness to polarization changes and reduced shadow fading.

Conclusions:

• Modified CI and FI path loss models provide more accurate predictions in enclosed environments for 5G mmWave networks.
• The enhanced models offer improved reliability and reduced prediction errors.
• These validated models are crucial for effective 5G network planning and deployment.