8-Transmit-Antenna Uplink Precoding Indicators for Low-Overhead Signaling

The patent segments the 8 transmit antenna configuration into multiple smaller precoding matrices (e.g., two 4x4 matrices or four 2x2 matrices). This segmentation allows the device to manage the complexity and power requirements by processing smaller matrix operations rather than one large 8x8 matrix, thereby maintaining signal accuracy while reducing computational power consumption.

The patent employs partial coherent codebook designs where only a subset of antenna ports are processed with full coherence, while others use non-coherent or partial coherent processing. This partial action approach maintains adequate signal accuracy for the most critical antenna ports while reducing overall computational complexity and power consumption compared to full coherent processing of all 8 antennas.

The patent merges multiple smaller precoding matrix indicators into a unified framework for 8 transmit antenna configuration. Instead of transmitting completely separate indicators for each antenna group, the system combines them with shared parameters and common structures, reducing redundant signaling while maintaining the flexibility to configure different antenna subsets independently when needed.

The patent designs the transmit precoding matrix indicator system to be universal, where the same indicator structure can represent multiple configuration scenarios (different antenna subsets, different codebook types, different coherence assumptions). This multi-functionality allows a single signaling mechanism to handle diverse configuration needs without requiring separate dedicated indicators for each case, thereby reducing overall signaling overhead.