Antenna Grouping With Shared Precoding for Lower UE Power
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Solution Overview
Problem
The increased number of transmit antennas in wireless communication systems leads to higher implementation complexity and power consumption due to the need for digital post-distortion algorithms, which can result in bandwidth loss and inefficiencies.
Innovation Solution
Grouping of transmit antennas with a shared precoding function to reduce the effective number of antennas and simplify the digital post-distortion algorithm complexity at the user equipment, thereby reducing power consumption while maintaining output power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of transmit antennas is increased to improve communication capacity, then system throughput is improved, but implementation complexity and power consumption increase
Solution Approach 1:
The patent segments the set of transmit antennas into multiple groups, where each group shares a common precoding function. This segmentation reduces the number of independent precoding functions that need to be processed, thereby reducing implementation complexity while maintaining the total number of transmit antennas for high communication capacity.
2Productivity
If the number of transmit antennas is increased to improve communication capacity, then system throughput is improved, but power consumption increases
Solution Approach 1:
By segmenting antennas into groups with shared precoding functions, the computational burden at the user equipment is reduced. This segmentation directly reduces power consumption in the digital post-distortion algorithms while preserving the communication capacity benefits of having multiple transmit antennas.
3Reliability
If digital post-distortion algorithms are applied to each transmit antenna to reduce non-linearity, then signal quality is improved, but algorithm complexity increases
Solution Approach 1:
The patent merges the processing of multiple antennas by applying a single precoding function to a group of antennas rather than treating each antenna independently. This merging reduces algorithm complexity while still applying distortion correction to maintain signal quality across all antennas in the group.
Data Source
AI summary
Apparatus, methods, and computer program products for wireless communication are provided. An example method may include transmitting, to a network node, information associated with a first quantity of effective downlink transmit (Tx) antennas associated with the UE. The example method may further include receiving, from the network node, a transmission indicative of a set of precoding functions for a set of Tx antennas associated with the network node, where each precoding function of the set of precoding functions is associated with a respective group of multiple Tx antennas of the set of Tx antennas associated with the network node, and where a second quantity of precoding functions is smaller than or equal to the first quantity of the effective downlink Tx antennas. The example method may further include receiving, from the network node, a second transmission based on the set of precoding functions.