compliance with the immutable factor properties and finite alphabet properties in adaptive codebook and dual-stage codebook

摘要

Codebook properties in adaptive codebook and dual-stage codebook (e.g., invariant coefficient properties and / or finite alphabet properties) method and apparatus are described to comply with. The method is an example, in general, receiving a plurality of feedback aspect of channels for wireless communication, based on a plurality of feedback aspects, determining a plurality of code words, based on a plurality of code words and determining the final precoding matrix, at least one of the final precoding matrix or code words, and to comply with at least one code word characteristics, the final precoding matrix by applying a plurality of spatial streams, and generating a spatial stream precoded, and transmitting the spatial streams precoded, the. For certain embodiments, to comply with at least one codebook properties, in order to enhance the performance metrics, the final precoding matrix and / or elements in each of the plurality of code words, the closest in the finite alphabet comprising quantized value.