Uplink Precoding Matrix Determination for 8-Antenna Ports
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Solution Overview
Problem
Current uplink precoding techniques in communication systems are insufficient to meet the high requirements for uplink transmission rates, particularly in scenarios such as real-time backhaul of high-definition video data.
Innovation Solution
A method for determining an uplink precoding matrix by receiving first and second indication information to determine corresponding precoding matrices for 4 antenna ports, which are then combined to form an uplink precoding matrix for 8 antenna ports, thereby enhancing the uplink transmission rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If codebook-based precoding techniques are used with current standard antenna configurations, then interference between receivers is reduced and communication system capacity is increased, but uplink transmission rates cannot meet high requirements for real-time backhaul of high-definition video data
Solution Approach 1:
The precoding matrix is segmented into two components: a first precoding matrix corresponding to 4 antenna ports and a second precoding matrix corresponding to 4 antenna ports. These segmented matrices are independently determined and then combined to form the complete uplink precoding matrix for 8 antenna ports, enabling enhanced transmission rates while maintaining manageable complexity
Solution Approach 2:
The first precoding matrix and the second precoding matrix are merged/combined to form the uplink precoding matrix for 8 antenna ports. This combining of multiple precoding matrices enables the system to achieve higher uplink transmission rates required for high-definition video backhaul while maintaining the advantages of codebook-based precoding
2Productivity
If the number of antenna ports is increased from 4 to 8 to support higher transmission rates, then uplink transmission rate requirements are met, but the complexity of precoding matrix determination increases
Solution Approach 1:
The determination of the 8-antenna-port precoding matrix is segmented into two independent determination processes: one for the first precoding matrix (4 antenna ports) and another for the second precoding matrix (4 antenna ports). This segmentation reduces the overall complexity compared to determining a single large precoding matrix directly
Solution Approach 2:
The problem is solved by adding a dimensional structure to the precoding matrix - using a two-component structure (first precoding matrix and second precoding matrix) rather than a single monolithic matrix. This dimensional approach allows the system to handle 8 antenna ports by combining two 4-antenna-port matrices, making the determination process more manageable
Data Source
AI summary
A method for uplink precoding matrix determination is disclosed. The method includes the following. First indication information and second indication information are received. The first indication information is used to determine a first transmission rank indicator (TRI) and a first precoding matrix indicator, and the second indication information is used to determine a second TRI and a second precoding matrix indicator. A first precoding matrix is determined according to the first TRI and the first precoding matrix indicator, and a second precoding matrix is determined according to the second TRI and the second precoding matrix indicator. Both the first precoding matrix and the second precoding matrix correspond to 4 antenna ports. An uplink precoding matrix is determined according to the first precoding matrix and the second precoding matrix. The uplink precoding matrix corresponds to 8 antenna ports. Uplink data is transmitted according to the uplink precoding matrix.