Codebook generation method and electronic apparatus

An electronic apparatus, comprising:

• at least one millimeter-wave antenna module, wherein the millimeter-wave antenna module comprises a plurality of antenna units, and the millimeter-wave antenna module enables, based on an initial codebook, all feed points of the antenna units to generate a plurality of pieces of electric field information respectively;
• a processing apparatus, electrically connected to the millimeter-wave antenna module to receive the electric field information, wherein the processing apparatus correspondingly generates a full chain codebook based on the electric field information, the processing apparatus extendedly generates a sub chain codebook based on the full chain codebook, and the processing apparatus generates, based on the full chain codebook and the sub chain codebook, an optimized codebook by using a power saving algorithm or a cumulative distribution function 50% gain loss algorithm;
• and
• a storage apparatus, electrically connected to the processing apparatus to store the initial codebook, the full chain codebook, the sub chain codebook, and the optimized codebook.