Non-Coherent Data Transmission Without Reference Signals
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Solution Overview
Problem
Current data transmission methods based on coherent transmission result in poor performance due to independent design of reference signals and data, leading to high error rates and low data transmission rates.
Innovation Solution
A non-coherent transmission method where data is optimized without relying on reference signals, allowing for uniform design and improved throughput performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coherent transmission with reference signals is used, then data can be transmitted with demodulation capability, but data transmission performance deteriorates due to independent design of reference signals and data
Solution Approach 1:
The patent combines reference signal generation and data optimization into a unified joint optimization framework. The network device performs coordinated optimization of both reference signals and data together, eliminating the previous independent design approach. This merging allows the system to achieve better data transmission performance by considering the interdependencies between reference signals and data in the optimization process.
2Measurement precision
If reference signals and data are transmitted on different time-frequency resources, then demodulation is enabled, but transmission efficiency decreases due to resource separation
Solution Approach 1:
The patent changes the optimization parameters from separate independent optimizations to joint optimization parameters that consider both reference signals and data together. By modifying the optimization framework to treat reference signals and data as interconnected elements with shared optimization criteria, the system achieves both accurate demodulation and improved transmission efficiency through coordinated parameter adjustment.
Data Source
AI summary
Embodiments of this application provide a non-coherent data transmission method and a communication apparatus. In the method, a transmit end device determines, in a first constellation, a first constellation point corresponding to first to-be-modulated bits, where the first constellation point corresponds to P first symbols, P=M∗N, M is a positive integer, and N is an integer greater than 1; and sends the P first symbols on N resource units by using M antenna ports, or sends P second symbols determined based on the P first symbols, and skips sending demodulation reference signals of the P first symbols or the P second symbols. In the method, a constellation is designed, and each constellation point in the constellation corresponds to a plurality of resource units, so that data can be transmitted with no need to transmit a reference signal, and only the data needs to be transmitted. In this way, all scheduled resource units can be jointly designed, an optimization dimension is higher, and data transmission performance is effectively improved.