A Wideband Non-Stationary 3D GBSM for HAP-MIMO Communication Systems at Millimeter-Wave Bands

• DOI: 10.3390/electronics13040678
• Publication Date: 2024-02-06T17:38:24Z
• Authors: Wancheng Zhang; Linhao Gu; Kaien Zhang; Yan Zhang; Saier Wang; Zijie Ji
• Keywords: Wideband; Extremely high frequency

High-altitude platforms (HAPs) are considered to be the most important equipment for next-generation wireless communication technologies. In this paper, we investigate channel characteristics under configurations of massive multiple-input multiple-output (MIMO) space and large bandwidth at millimeter-wave (mmWave) bands, along with moving essence HAP ground terminals. A non-stationary three-dimensional (3D) geometry-based stochastic model (GBSM) is proposed a system. We use cylinder-based geometric modeling method construct derive impulse response (CIR). Additionally, birth–death process scatterers enclosed using Markov process. Large-scale parameters such as free loss rainfall attenuation also taken into consideration. Due relative motion between terminals, MIMO space, wide in mmWave band, exhibit non-stationarities time, frequency domains. By deriving temporal auto-correlation function (ACF), explore non-stationarity time domain impact various on correlations across HAP-MIMO channels. The spatial cross-correlation (CCF) scenarios, correlation (FCF) bands considered. Moreover, conduct simulation research MATLAB. Simulation results show that theoretical align well results, highlights fact constructed 3D GBSM can characterize channels