Data Receiver Discriminating Constellation Mapping Schemes
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Solution Overview
Problem
Existing data transmission standards face challenges in coexistence and interoperability between data transmission and reception apparatuses due to differences in constellation mapping schemes, particularly in improving data throughput in local area networks with increasing users and diverse applications.
Innovation Solution
A data receiving apparatus capable of distinguishing between data frames using different constellation mapping schemes, such as BPSK, QBPSK, +45 degree QBPSK, and -45 degree BPSK, by generating decision matrices and comparing them with threshold values to determine the applied schemes, allowing for discrimination and identification of data frames modulated using OFDM and different sub-carrier groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a new data transmission standard with advanced constellation mapping schemes is adopted to improve data throughput, then data throughput is improved, but coexistence and interoperability with existing data transmission standards deteriorates
Solution Approach 1:
The data receiving apparatus is designed to support multiple constellation mapping schemes (BPSK, QPSK, 16-QAM, 64-QAM) within a single system. The determination unit can identify which scheme is being used and the frame identification unit can process accordingly, enabling the receiver to interoperable with both legacy and advanced transmission standards while maintaining improved throughput capabilities when advanced schemes are detected
Solution Approach 2:
The system dynamically changes its operational parameters based on the detected constellation mapping scheme. The determination unit analyzes received signals to identify the modulation scheme, and the frame identification unit adjusts its processing parameters accordingly. This allows seamless adaptation between different data transmission standards without requiring separate hardware systems
2Productivity
If different constellation mapping schemes are used to differentiate data frames for improved throughput, then data transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The data receiving apparatus is segmented into distinct functional units: a determination unit for identifying the constellation mapping scheme and a frame identification unit for processing the data frame based on the identified scheme. This modular segmentation allows each unit to perform its specific function independently, managing complexity through functional decomposition while supporting multiple modulation schemes for improved transmission efficiency
Data Source
Figure 1(A)~1(B)
Figure 2(A)~2(C)
Figure 3(A)~3(B)
AI summary
Disclosed are a data receiving apparatus that may discriminate a type of a received data frame, and a data transmission apparatus that may apply a constellation mapping scheme to a data frame so that a data receiving apparatus may discriminate the data frame in accordance with the constellation mapping scheme applied to the data frame.