1-Bit Quantization Multi-Layer Transmission Reference Vector
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving data signals using 1-bit quantization, particularly in multi-layer transmission and reception scenarios, due to energy efficiency concerns and the non-linear relationship between transmitted and received signals.
Innovation Solution
A method for transmitting and receiving signals in a wireless communication system using 1-bit quantization, involving the generation of a demodulation reference vector based on a received reference signal, which is generated differently based on the modulation method of the data signal, allowing for multi-layer transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If 1-bit quantization is used in multi-layer transmission, then energy efficiency is improved, but signal processing complexity increases due to non-linear relationship between transmitted and received signals
Solution Approach 1:
The patent changes the quantization parameter from traditional multi-bit to 1-bit, fundamentally altering the signal processing characteristics. This parameter change enables extreme energy efficiency while the patent compensates for the resulting non-linearity through specific reference signal generation methods and demodulation techniques designed for 1-bit quantized systems
Solution Approach 2:
The patent introduces demodulation reference vectors as an intermediary element that mediates between the transmitted reference signals and the received quantized signals. These reference vectors serve as a bridge to handle the non-linear relationship introduced by 1-bit quantization, enabling accurate data demodulation despite the simplified quantization process
2Measurement precision
If reference signal is generated differently based on modulation method, then data transmission accuracy is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by generating reference signals with specific properties tailored to each modulation method (BPSK, QPSK, etc.). Each modulation type receives a reference signal configuration optimized for its characteristics, such as specific phase rotations or signal structures, rather than using a universal reference signal approach
Solution Approach 2:
The patent changes reference signal parameters (such as phase, amplitude, or structure) based on the detected modulation method. When BPSK is detected, specific reference signal parameters are applied; when QPSK is detected, different parameters are used, allowing accurate demodulation adapted to each modulation scheme's requirements
3Productivity
If multi-layer transmission is implemented in 1-bit quantization system, then data rate is improved, but reliability decreases due to non-linear signal relationship
Solution Approach 1:
The patent segments the multi-layer transmission into multiple reference signal transmission occasions, with each occasion dedicated to a specific layer. This segmentation allows the receiver to separately estimate and process each layer's channel characteristics, reducing the impact of non-linearity on overall reliability while maintaining high data rates through parallel layer transmission
Solution Approach 2:
The patent performs preliminary channel estimation and demodulation reference vector generation before actual data demodulation. By pre-processing the reference signals and establishing demodulation parameters in advance, the system prepares optimal detection conditions for each layer, compensating for the non-linear effects of 1-bit quantization before the critical data detection stage
Data Source
AI summary
Disclosed are a multi-layer transmission and reception method in a communication system based on 1-bit quantization in a wireless communication system, and an apparatus for supporting same. Particularly, a method by which a first device transmits and receives a signal in a wireless communication system comprises the steps of: receiving a reference signal (RS) from a second device; generating a demodulation reference vector on the basis of the RS; and receiving a data signal from the second device by using the demodulation reference vector, wherein the RS can be generated differently according to the modulation of the data signal.