randomly and with randomly and with randomly and with randomly and uniformly distributed uniformly distributed uniformly distributed uniformly distributed direction direction direction direction MS Speed (km/h) Inter-Site Interference Explicitly modeled Explicitly modeled Explicitly modeled Explicitly modeled BS Noise Figure (dB) MS Noise Figure (dB) BS Antenna Gain (Bore-Sight) (dBi) MS Antenna Gain (dBi) Thermal Noise Level - -174 - 174 (dBm/Hz) Parameters for Assessment of Cell Spectral Efficiency and Cell Edge User Spectral Efficiency Traffic Model Full buffer Full buffer Full buffer Full buffer System Bandwidth 2 X 20 MHz (FDD) 2 X 10 MHz (FDD) 2 X 10 MHz (FDD) 2 X 10 MHz (FDD) 20 MHz (TDD) 40 MHz (TDD) 20 MHz (TDD) 20 MHz (TDD) Number of Users/Cell Parameters for Evaluation of VolP Capacity Traffic Model System Bandwidth 2 X 5 MHz (FDD) 2 X 5 MHz (FDD) 2 X 5 MHz (FDD) 2 X 5 MHz (FDD) 10 MHz (TDD) 10 MHz (TDD) 10 MHz (TDD) 10 MHz (TDD) Simulation Duration for a Single Drop (s) Parameters for Link-Level Simulation (Mobility Requirement) Traffic Model Full buffer Full buffer Full buffer Full buffer Channel Model Indoor hotspot channel Urban micro-cellular Urban macro-cellular Rural macro-cellular model channel model channel model channel model System Bandwidth (MHz) Number of Users/Cell 12.8 Link-level and system-level channel models Cluster for Path n MS Travel Direction Sub-path k n,m, AoA MS Antenna MS Antenna Array Array Broadside BS Antenna Array BS Antenna Array Broadside FIGURE 12-7 An illustration of angular parameters in the MIMO channels [6,8] locations of the scatterers, rather the directions of the rays generated as a result of scattering objects. The geometric modeling of the radio channel enables separation of propagation parameters and antennas. The channel parameters for individual snapshots are determined stochastically based on statistical distributions extracted from channel measurements. Antenna geometries and radiation patterns can be defined properly by the model. As shown in Figure 12-7,