MIMO Receiver LQ Decomposition Channel Feedback
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Solution Overview
Problem
Current communication systems lack an effective method for feedbacking channel information in MIMO schemes, limiting the stable transmission and reception of large-capacity data between access points and stations, especially in wireless local area networks using limited resources.
Innovation Solution
An apparatus and method utilizing an LQ decomposition scheme to detect and feedback channel information, enabling stable high-rate data transmission and reception by generating and transmitting channel information using a receiving unit, detecting unit, and transmitting unit within the communication system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO scheme is used to transmit large-capacity data at high rate, then data transmission rate is improved, but channel information feedback method is insufficient leading to unreliable data reception
Solution Approach 1:
The patent implements a feedback mechanism where the receiver detects data streams using LQ decomposition, generates channel information based on detected streams, and feeds back this channel information to the transmitter. This enables the transmitter to adjust transmission parameters according to actual channel conditions, ensuring reliable high-rate data transmission.
Solution Approach 2:
The patent changes the approach to channel information acquisition by using LQ decomposition to detect data streams first, then generating channel information from the detected streams. This parameter change in the information acquisition method enables reliable MIMO operation at high data rates.
2Measurement precision
If LQ decomposition scheme is used to detect data stream and generate channel information, then data receiving performance is improved, but system complexity increases
Solution Approach 1:
The patent performs LQ decomposition and data stream detection at the receiver before generating channel information for feedback. This preliminary action at the receiver side enables accurate channel estimation without requiring complex processing at the transmitter, balancing performance improvement with system complexity.
Data Source
AI summary
Disclosed is an apparatus for receiving data in a communication system, including: a receiving unit configured to receive data transmitted from an access point (AP) by a multi-input multi-output (MIMO) scheme; a detecting unit configured to detect a data stream of the received data using an LQ decomposition scheme; a generating unit configured to generate channel information regarding the data stream; and a transmitting unit configured to feedback the channel information to the AP.