Frequency Lattice Modulation for 5G Error Reduction
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Solution Overview
Problem
In 5G wireless communication systems, there is a need to reduce error rates when transmitting signals using index modulation schemes, particularly considering multidimensional constellations, to enhance data transmission efficiency.
Innovation Solution
The implementation of a frequency lattice modulation (FLM) method, where a transmission symbol vector is generated using a lattice generation matrix, allowing for a linear combination of vectors to create codewords and symbols, thereby reducing error rates and improving energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional modulation schemes are used for signal transmission, then the system implementation is simple, but the error rate increases
Solution Approach 1:
The patent transitions from conventional one-dimensional modulation to multi-dimensional lattice modulation. By using lattice generation matrices to create multi-dimensional constellation points, the system achieves better error rate performance through increased dimensional separation while maintaining manageable complexity through structured matrix operations.
Solution Approach 2:
The patent changes the modulation parameters by introducing lattice generation matrices with specific mathematical properties. These matrices transform the traditional modulation parameters into lattice-based parameters that provide improved error rate performance through optimized constellation geometry and increased minimum distance between signal points.
2Productivity
If higher data rates are pursued in 5G systems, then data transmission capacity increases, but energy consumption increases
Solution Approach 1:
The patent performs preliminary optimization by pre-designing lattice generation matrices that are optimized for energy efficiency. These matrices are constructed beforehand to minimize the energy required for signal transmission while maintaining high data rates, allowing the system to achieve high productivity without proportional energy consumption increases.
Solution Approach 2:
The patent optimizes energy consumption by changing the modulation parameters through lattice-based constellation design. The lattice generation matrices enable more efficient packing of signal points in multi-dimensional space, reducing the average transmit power required for a given data rate while maintaining robust error performance.
Data Source
AI summary
The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE). According to various embodiments, a transmission device in a wireless environment may include a transceiver, and a processor operatively coupled to the transceiver. The processor may be configured to generate a codeword related to transmission data, generate symbols from the codeword by using a plurality of transmission symbol vectors determined using a linear combination of vectors corresponding to respective rows of a lattice generation matrix, and transmit a signal generated based on the symbols via the transceiver.