Real-Number M-Ary Signal Encoding via Time-Division Multiplexing
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Solution Overview
Problem
Conventional M-ary signal modulation techniques are limited in design freedom due to the requirement that M must be an integer exponent of 2k, restricting the ability to freely select M based on channel status for efficient signal transmission.
Innovation Solution
A real number M-ary encoding method and apparatus that temporally multiplexes N1 M1-ary and N2 M2-ary signals, where M is determined by channel error rate and SNR, allowing M to be freely selected and enabling efficient signal transmission by combining these signals to form a real number M-ary signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If M is selected to satisfy M=2^k according to conventional M-ary signal modulation technique, then the signal transmission follows standard modulation schemes, but the design freedom is restricted and transmission efficiency cannot be optimized based on channel status
Solution Approach 1:
The patent changes the fundamental parameter M from being restricted to integer powers of 2 to allowing real number values. This is achieved by dividing k-bit binary data into multiple groups and mapping each group to M-ary signals with different M values, then combining them through time-division multiplexing. This parameter change enables M to be freely determined based on channel status, directly resolving the contradiction between design freedom and transmission efficiency.
2Productivity
If M is freely determined based on channel status to improve transmission efficiency, then optimal signal transmission is facilitated, but conventional M-ary modulation techniques cannot be applied directly
Solution Approach 1:
The patent segments k-bit binary data into multiple groups (first group, second group, etc.) and maps each segment to M-ary signals with potentially different M values (M1, M2, etc.). These segmented signals are then combined through time-division multiplexing to form the final real number M-ary signal. This segmentation approach enables flexible M selection while maintaining manageable system complexity through modular processing.
Solution Approach 2:
The patent introduces a time dimension by using time-division multiplexing to combine multiple integer M-ary signals into a single real number M-ary signal. Instead of trying to directly generate a non-integer M-ary signal in the conventional modulation domain, the solution moves to the time domain, where multiple signals with different M values are sequentially transmitted and combined, effectively adding a temporal dimension to the modulation process.
Data Source
AI summary
Disclosed are a real number M-ary signal encoding method, where M is a real number having N time dimensions and L frequency dimensions, and an encoding apparatus using the encoding method. The real number M-ary encoding apparatus according to the present invention comprises a coding unit which codes every K (K is an integer) binary bit units of binary data DATA to generate a first input code and a second input code, a first signal generator which receives the first input code and generates N1 number of M1-ary signals, a second signal generator which receives the second input code and generates N2 number of M2-ary signals, and a first time division multiplexing module which temporally multiplexes the N1 number of M1-ary signals and the N2 number of M2-ary signals to generate a real number M-ary signal which utilizes a voltage ratio a (a=A2/A1) used for M1-ary and M2-ary signals to minimize a transmission error rate.