MIMO Antenna Adaptive Stream Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing MIMO antenna apparatus face challenges in achieving high-speed and high-quality communication in small-sized devices due to the complexity and cost of increasing the number of antenna elements, and the size constraints of mobile devices, as well as the larger size of receiver circuits with transversal filters.
Innovation Solution
A MIMO antenna apparatus with adaptive control mechanisms that adjust the number of data streams and modulation/demodulation methods based on signal quality and received signal levels, using a combination of MIMO demodulation and adaptive demodulation to optimize communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of antenna elements is increased to achieve high-speed communication with increased communication capacity, then the communication capacity is improved, but the device size and cost increase
Solution Approach 1:
The patent applies dynamic control by adjusting the number of active data streams based on reception quality. The system can switch between different numbers of streams (e.g., 2 streams or 1 stream) depending on signal conditions, allowing high communication capacity when possible while reducing complexity and effective size when signal quality degrades. This dynamic adaptation resolves the contradiction between maintaining high capacity and managing device constraints.
Solution Approach 2:
The system changes operational parameters (number of data streams, modulation schemes) based on reception quality metrics. By monitoring reception quality and adjusting the number of streams accordingly, the system optimizes communication capacity while adapting to signal conditions, effectively managing the trade-off between capacity and device constraints without physically increasing antenna elements.
2Productivity
If the number of antenna elements is increased to achieve high-speed communication, then the communication capacity is improved, but the complexity and cost of the device increase
Solution Approach 1:
The system dynamically adjusts the number of active data streams based on reception quality. When reception quality is good, it uses more streams (e.g., 2 streams) to maximize capacity. When reception quality deteriorates, it reduces to fewer streams (e.g., 1 stream), thereby reducing processing complexity and computational burden while maintaining acceptable communication performance.
Solution Approach 2:
The patent changes operational parameters including the number of data streams and modulation schemes based on reception quality metrics. This parameter adaptation allows the system to maintain high communication capacity under good conditions while reducing complexity under challenging conditions, without requiring additional physical antenna elements.
3Reliability
If adaptive control is implemented to optimize communication performance, then the communication quality is improved, but the control complexity increases
Solution Approach 1:
The system implements feedback control by monitoring reception quality metrics and using this information to adjust the number of data streams. The receiver measures reception quality, compares it against thresholds, and sends feedback to control the transmitter's stream configuration. This feedback mechanism improves communication quality by adapting to channel conditions while keeping control logic relatively simple through threshold-based decision making.
Data Source
AI summary
A MIMO antenna apparatus receives a plurality of radio signals modulated and transmitted by a sender-side radio station apparatus using a MIMO (Multi-Input Multi-Output) communication method with a number of data streams and a modulation and demodulation method. The MIMO antenna apparatus includes a plurality of antenna elements, detection means, MIMO demodulation means, radio transmission means, and control means. The control means controls the sender-side radio station apparatus by making the radio transmission means transmit the control signal, and controlling the MIMO demodulation means, so as to change, based on the received signal levels and the signal quality, at least one of the number of data streams and the modulation and demodulation method for the MIMO communication method used by the sender-side radio station apparatus and the MIMO demodulation means.