1-Bit DPSK Quantization for Lower-Power Wireless Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing explosive data traffic, high-speed services, and energy efficiency, particularly in next-generation mobile communication systems requiring advanced technologies like dual connectivity, massive MIMO, and non-orthogonal multiple access.
Innovation Solution
A transmitting and receiving method based on 1-bit quantization using 1-bit differential phase shift modulation and demodulation techniques, along with link adaptive transmission/reception, to improve energy efficiency and channel quality measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If 1-bit quantization is used in the communication system, then power consumption is reduced, but signal processing capability and data transmission quality may deteriorate
Solution Approach 1:
The patent applies parameter changes by transitioning from conventional multi-bit quantization to 1-bit quantization, fundamentally changing the resolution parameter of the analog-to-digital converter. This parameter change reduces power consumption while the invention compensates for the resulting signal processing degradation through differential encoding schemes that preserve essential information in the reduced-bit representation
Solution Approach 2:
The patent employs copying by using differential phase shift keying (DPSK) where information is encoded in the phase difference between consecutive symbols rather than absolute phase values. This differential copying approach allows the system to reconstruct signal information from simplified 1-bit quantized samples, maintaining reliability despite the reduced quantization precision
2Reliability
If conventional multi-bit quantization is used, then signal processing capability is maintained, but power consumption increases
Solution Approach 1:
The patent extracts only the essential information needed for reliable communication by using 1-bit quantization that captures phase difference information through differential encoding. Instead of processing full multi-bit quantized signals, the system extracts and transmits only the critical phase transition information, significantly reducing the computational load and power consumption of signal processing operations
Data Source
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AI summary
The present disclosure provides a method for transmitting and receiving in a wireless communication system and an apparatus therefore. Specifically, in a wireless communication system according to an embodiment of the present disclosure, there is provided a method for transmitting and receiving a signal by a receiving apparatus, the method includes receiving, from a transmitting apparatus, signals modulated based on a differential phase shift keying (DPSK) method through a plurality of reception paths, calculating a differential value in each reception path of the plurality of reception paths based on the received signals, and calculating reliability for the received signals, in which the reliability is proportional to a real value of a sum of the differential values in each reception path of the plurality of reception paths.