Wireless MIMO Antenna Mapping for Early Control Demodulation
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Solution Overview
Problem
Conventional wireless communication systems require advance information to distinguish between MIMO and non-MIMO blocks, leading to delayed demodulation of shared control information and increased circuit complexity.
Innovation Solution
A wireless communication system that maps specific data to be transmitted from the same antenna as the pilot signal, allowing early demodulation and eliminating the need for advance information on MIMO or non-MIMO blocks by associating antennas for transmission and pilot signal propagation path estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If advance information is used to distinguish between MIMO and non-MIMO blocks, then demodulation can be performed according to the appropriate method, but demodulation of shared control information is delayed and circuit complexity increases
Solution Approach 1:
The patent extracts the specific data (such as destination address or block type indicator) from the shared control information and transmits it separately using a predetermined antenna before the main data block. This allows the receiver to identify whether the upcoming block is MIMO or non-MIMO without needing complex advance information processing, thereby reducing circuit complexity while maintaining demodulation accuracy
Solution Approach 2:
The patent performs preliminary transmission of specific data that indicates the block type (MIMO or non-MIMO) using a predetermined antenna before the actual data block is transmitted. This preliminary action enables the receiver to prepare the appropriate demodulation method in advance, eliminating the need for complex real-time determination circuits and reducing overall system complexity
2Reliability
If advance information is used to distinguish between MIMO and non-MIMO blocks, then appropriate demodulation can be performed, but processing time is increased
Solution Approach 1:
The patent transmits specific data indicating block type (MIMO or non-MIMO) in advance using a predetermined antenna before the main data block arrives. This preliminary action allows the receiver to determine the demodulation method ahead of time, eliminating processing delays that would occur if the block type had to be determined after receiving the entire block, thus reducing processing time while maintaining accuracy
3Productivity
If MIMO transmission is used for all blocks, then data transmission capacity is increased, but power consumption and circuit complexity increase
Solution Approach 1:
The patent dynamically selects between MIMO and non-MIMO transmission modes for different blocks based on the specific data indicating block type. Instead of using MIMO for all blocks, the system adapts the transmission mode to match the actual requirements of each block, thereby reducing power consumption for blocks that do not require MIMO while maintaining high data transmission capacity for blocks that do benefit from MIMO
Solution Approach 2:
The patent applies different transmission qualities (MIMO or non-MIMO) to different blocks based on their specific requirements indicated by the specific data. Rather than uniformly applying MIMO to all blocks, each block receives the appropriate transmission mode locally, optimizing power efficiency while maintaining necessary data transmission capacity where needed
Data Source
AI summary
To enable shared control information to be demodulated without requiring advance information on a MIMO block or non-MIMO block prior to demodulation of the shared control information of the block, and further enable the shared control information to be demodulated early. A wireless transmitting apparatus which performs wireless transmission in MIMO or non-MIMO for each radio frame comprised of a block or a plurality of blocks, and has mapping sections (110-1 to 110-n) that perform mapping of pilot signals to perform propagation path estimation, specific data, and user data, where the mapping sections perform mapping so that the specific data is transmitted in non-MIMO in the block or the radio frame transmitted in MIMO, and that an antenna that transmits the specific data is beforehand associated with an antenna that transmits a pilot signal to perform propagation path estimation.