Wireless Reception Device Block Dividing Signal Detection
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Solution Overview
Problem
In MIMO systems, achieving good channel characteristics is hindered when the number of transmission antennas exceeds the number of reception antennas, leading to deteriorated transmission characteristics, which is challenging for small wireless reception devices like mobile terminals that cannot easily increase their antenna count.
Innovation Solution
A wireless reception device equipped with a channel response estimation unit, block dividing unit, and transmission signal detection unit that divides reception signals into blocks, estimates channel responses, and separates transmission signals using zero forcing or MMSE criteria, allowing for effective signal detection without increasing the number of reception antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of transmission antennas is increased to improve transmission rate, then the transmission rate increases, but the channel characteristics deteriorate when M > N
Solution Approach 1:
The patent segments the received signal into multiple blocks in the time domain, where each block corresponds to a specific time interval. By processing multiple blocked signals through parallel detection paths, the system effectively increases the number of available reception signals without adding physical antennas, thereby maintaining good channel characteristics while supporting high transmission rates.
2Reliability
If the number of reception antennas is increased to maintain good channel characteristics, then the channel characteristics improve, but the device size and complexity increase
Solution Approach 1:
The patent transitions from spatial dimension (multiple antennas) to time dimension (multiple blocks) to increase the number of reception signals. By dividing the received signal into multiple time-blocked segments and processing them through parallel detection paths, the system achieves the equivalent effect of having multiple reception antennas without physically adding antenna elements, thus avoiding increased device size and complexity.
3Reliability
If the number of reception antennas is increased to support M > N transmission, then the transmission characteristics improve, but it becomes difficult for small wireless devices to implement
Solution Approach 1:
The patent segments the received signal into multiple blocks and processes each block through separate detection paths. This segmentation approach allows small wireless devices to achieve M > N capability without adding physical antennas, as the blocking and parallel processing can be implemented through software or digital signal processing techniques that are feasible in resource-constrained devices.
Solution Approach 2:
The patent replaces the mechanical approach of adding physical antennas with a digital signal processing approach using signal blocking and parallel detection. This substitution allows small wireless devices to achieve enhanced transmission characteristics through computational methods rather than hardware expansion, making it practical for mobile terminals and other compact devices.
Data Source
AI summary
A wireless reception device which communicates with a wireless transmission device which has a plurality of transmission antennas, includes at least one reception antenna which receives a plurality of transmission signals transmitted from the plurality of transmission antennas of the wireless transmission device; a channel response estimation unit which estimates a channel response between a plurality of transmission antennas and the reception antenna; a block dividing unit which divides a reception signal of at least one reception antennas into a plurality of blocks; and a transmission signal detection unit which detects the plurality of transmission signals transmitted by the wireless transmission device based on a plurality of reception signals divided by the block dividing unit and the channel response estimated by the channel response estimation unit.