Staircase Encoding With Block-Code Shaping for Higher-Order Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently encoding and decoding data using higher-order modulation schemes, leading to increased complexity and reduced performance due to the need for transmitting shaping bits, which results in a shaping gap and reduced throughput.
Innovation Solution
Implementing staircase encoding with block-code-based shaping, where shaping bits are generated and transmitted using a framework that includes configuring communication devices with parameters such as code block length, coding rate, and quantity of component codes, thereby reducing complexity and improving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher-order modulation schemes are used to increase data rates, then throughput is improved, but complexity increases and performance degrades due to shaping gap
Solution Approach 1:
The patent segments the encoding process into distinct stages: information bit generation, shaping bit generation, concatenation, and FEC encoding. By dividing the complex encoding task into manageable segments, the system can process higher-order modulation data more efficiently while reducing overall complexity
Solution Approach 2:
The patent performs preliminary shaping bit generation before the main encoding process. Shaping bits are generated in advance based on the information bits, and then concatenated with the information bits before FEC encoding. This preliminary action prepares the data structure to reduce the shaping gap in higher-order modulation schemes
2Reliability
If shaping bits are transmitted to reduce shaping gap, then performance is improved, but throughput is reduced due to increased overhead
Solution Approach 1:
The patent merges shaping bits and information bits into a single concatenated bit sequence before FEC encoding. This combining approach allows both the performance benefits of shaping bits and the throughput efficiency of unified encoding, eliminating the need to transmit separate shaping bit overhead
Solution Approach 2:
The shaping bits are generated self-service from the information bits through a deterministic process. The shaping bits are derived directly from the information bit sequence using predefined algorithms, eliminating the need for separate transmission of shaping information and reducing overhead
3Device complexity
If staircase encoding is used to reduce complexity, then encoding complexity is reduced, but performance may degrade without proper shaping integration
Solution Approach 1:
The patent creates a composite encoding structure that combines staircase encoding with block-code-based shaping. This composite approach integrates the simplicity of staircase encoding with the performance benefits of shaping, achieving both low complexity and high performance through the unified concatenated encoding process
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first device may identify parameters for staircase encoding. The first device may perform a staircase encoding procedure on information bits in accordance with the parameters to generate encoded bits. At current step of the staircase encoding procedure, the first device may concatenate a first set of shaping bits with a first set of information bits to generate a second set of bits, perform a channel decoding procedure on the second set of bits to generate a second set of shaping bits for a subsequent step of the staircase encoding procedure, perform an encoding procedure on a third set of bits to generate a set of parity bits, and map the third set of bits and the set of parity bits to a set of symbols to generate a fourth set of bits for the subsequent step.