Joint Modeling for MC-TDMA and Beamforming in mmWave Communications

Abstract

The increasing demand for ultra-high data rates and low-latency communication in next-generation wireless networks has led to the exploration of millimeter-wave (mmWave) frequency bands. These frequency bands offer significant bandwidth but are challenged by severe path loss, high susceptibility to blockage, and complex channel conditions. To address these challenges, a joint system modeling framework that integrates multicarrier time-division multiple access (MC-TDMA) with beamforming techniques is introduced. This study presents an analytical model that combines MC-TDMA’s flexible time-slot allocation with the high directionality and interference mitigation capabilities of beamforming, tailored to the unique characteristics of mmWave channels. Two optimization algorithms are proposed based on dynamic resource allocations for time slot allocations and hybrid beamforming respectively. Simulations experiments are performed under realistic propagation conditions, considering number of base station antennas, radio frequency (RF) chains, number of users and channel paths. Results demonstrate superior performance over existing schemes. The proposed schemes are verified to have smaller spectral efficiency gaps when compared to the fully-digital beamforming method. The findings offer a practical solution for high-capacity, low-latency communication in dense and dynamic mmWave environments, paving the way for more efficient next-generation networks design.