Transmitter Interleaving Layout for Burst Error Suppression
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Solution Overview
Problem
Existing transmitting apparatuses face challenges in suppressing burst errors and maintaining error rate performance when the number of modulation multi-values increases, particularly due to fading notches and distance from the preamble in multi-antenna transmission systems, and require complex encoder configurations to manage block sizes effectively.
Innovation Solution
A transmitting apparatus configuration that includes block encoding, modulation, and interleaving sections to arrange block encoded data such that each data symbol is composed of intra-block data from different encoded blocks, allowing for simple suppression of burst errors and uniform error rate performance across encoded blocks without changing the block size, and a multi-antenna system that transmits preambles and data symbols from multiple antennas to maintain high separation precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the number of modulation multi-values is increased, then data transmission speed is improved, but the probability of burst errors increases due to fading notches
Solution Approach 1:
The transmitted signal is divided into multiple encoded blocks, and data from different encoded blocks are interleaved within each symbol. This segmentation ensures that a fading notch affecting a specific time period only impacts portions of multiple encoded blocks rather than causing burst errors within a single block, thereby maintaining reliability while supporting higher modulation orders for increased data transmission speed.
2Reliability
If the encoded block size is increased to suppress burst errors, then burst error probability decreases, but the encoder configuration complexity increases
Solution Approach 1:
Instead of using a single large encoded block that would require complex encoder configuration, the system segments data into multiple smaller encoded blocks. The interleaving process then combines portions of these blocks within each symbol, achieving the burst error suppression effect of large blocks while maintaining the simplicity of smaller, standardized encoder configurations.
Solution Approach 2:
The solution moves from the time dimension (increasing block duration) to the block structure dimension (increasing number of blocks). By interleaving data from multiple encoded blocks within each symbol, the system achieves diversity without changing the time duration of individual blocks, thus avoiding complex encoder reconfiguration while suppressing burst errors.
3Productivity
If data is concentrated in fewer symbols, then transmission efficiency is improved, but burst errors are more likely to occur during fading notches
Solution Approach 1:
Data from multiple encoded blocks are segmented and distributed across symbols through interleaving. This ensures that even when modulation order is increased and fewer symbols are used overall, each symbol contains dispersed data from multiple blocks, preventing burst errors while maintaining the transmission efficiency gains from higher-order modulation.
Data Source
AI summary
A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form data symbols; and an arranging (interleaving) part arranges (interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged (interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased.