WP1 of IST-WINNER Project: MATLAB Implementation of WINNER Phase II Channel Model (WIM)

The MATLAB implementation of the WINNER Phase II Model (WIM) provided by the WP1 channel modeling work package of the IST-WINNER project primarily serves to generate radio channel realizations for link-level and system-level simulations. This implementation builds upon earlier versions of channel models including the WINNER II interim model [6], WINNER I (interim) model [3], 3GPP/3GPP2 Spatial Channel Model (SCM) [4], and the SCM(E) extension model. The code architecture employs object-oriented design principles for managing channel parameters and propagation conditions. Detailed specifications of the WIM model can be found in [1]. This documentation describes the software implementation structure of WIM, including its input/output interfaces and core functions. The channel model scenarios and parameters have been modified to align with the IMT.EVAL [7] channel model specifications.

Furthermore, the WIM model can be extended to accommodate additional channel modeling scenarios and parameters. Potential enhancements include implementing additional fading channel models (e.g., Nakagami, Rician distributions), incorporating advanced multipath propagation models with dynamic path loss calculations, and integrating configurable antenna array models with beamforming capabilities. The code structure allows for modular integration of new features through well-defined function interfaces. Optimization techniques such as parallel processing and precomputation of channel coefficients could significantly improve computational efficiency while maintaining simulation accuracy.

In summary, the WIM model serves as a powerful tool for wireless communication system simulation and performance evaluation. Its modular MATLAB implementation facilitates continuous improvement and adaptation to evolving communication requirements and technological developments. The model's scalability and standardized interfaces make it suitable for both academic research and industrial applications.