MIMO Coded Frame Allocation Across Fundamental Bands

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Solution Overview

Problem

MIMO systems using multiple fundamental bands suffer from insufficient frequency diversity effects, limiting their ability to improve reception quality in diverse channel conditions.

Innovation Solution

A transmitter design that performs MIMO transmission by allocating components of error correction coded data across multiple fundamental bands, utilizing pre-coding and interleaving to enhance frequency diversity, with phase change matrices and different interleaving patterns applied to each frequency channel to reduce correlation and improve reception quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If MIMO transmission is performed using multiple fundamental bands, then transmission capacity is increased, but frequency diversity effect is insufficient

Engineering Contradiction:

Improvetransmission capacityVSAvoidfrequency diversity effect

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The error correction coded block is divided into multiple components that are allocated to different fundamental bands. This segmentation allows the system to transmit data across multiple frequency bands while maintaining the ability to exploit frequency diversity, as each component can experience independent fading conditions

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from single-band MIMO transmission to multi-band MIMO transmission by adding the frequency band dimension. This dimensional expansion increases transmission capacity while the patent simultaneously addresses frequency diversity through cross-band component allocation and interleaving techniques

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If data components are allocated to multiple fundamental bands, then frequency diversity is improved, but system complexity increases

Engineering Contradiction:

Improvefrequency diversityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Error correction coding and component allocation to multiple fundamental bands are performed in advance before transmission. This preliminary processing organizes the data structure to inherently support frequency diversity exploitation, reducing the need for complex real-time processing at the receiver

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent changes the allocation parameter by distributing data components across multiple fundamental bands rather than confining them to a single band. This parameter change enables frequency diversity while the structured allocation pattern manages system complexity

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10693588B2Transmission device, transmission method, reception device, reception method, integrated circuit, and program

Publication Date: 2020.06.23 SUN PATENT TRUST

AI summary

A transmission device that performs multiple-input multiple-output (MIMO) transmission of transmit data using a plurality of fundamental bands. The transmission device includes an error correction coding unit, a mapping unit, and a MIMO coding unit. The error correction coding unit, for each data block of predefined length, performs error correction coding and thereby generates an error correction coded frame. The mapping unit maps each predefined number of bits in the error correction coded frame to a corresponding symbol and thereby generates an error correction coded block. The MIMO coding unit performs MIMO coding with respect to the error correction coded block. Components of data included in the error correction coded block are allocated to at least two of the fundamental bands and transmitted.