Limited Feedback Precoding Simulation with Grassmannian Codebooks

This simulation program is designed for researching limited feedback precoding techniques. It incorporates Grassmannian codebooks with 2-bit, 4-bit, and 7-bit resolutions, utilizing an SVD-based codebook selection algorithm. The implementation allows users to select different codebooks for simulation according to specific requirements, enabling comprehensive performance analysis. Through this program, researchers can gain deeper insights into the principles and performance characteristics of limited feedback precoding systems. Key implementation features include: - Grassmannian codebook generation using subspace packing algorithms - SVD-based selection mechanism that computes the optimal precoding matrix by maximizing the chordal distance between codewords - Configurable simulation parameters for different quantization bits and channel conditions - Performance metrics calculation including capacity analysis and bit error rate evaluation This simulation framework facilitates better understanding and practical application of limited feedback precoding technology in wireless communication systems.