Overlapped Multiplexing Spectrum Allocation for Bandwidth Waste
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Solution Overview
Problem
Overlapped multiplexing systems experience a wide occupied bandwidth but a relatively narrow actual processing bandwidth, leading to a waste of frequency spectrum resources, with existing solutions failing to effectively address this issue.
Innovation Solution
A frequency spectrum allocation method that determines the processing bandwidth of an overlapped multiplexing signal and allocates the non-processing bandwidth to traditional communication signals, such as QAM or PSK signals, within the same frequency band, ensuring efficient use of spectrum resources and improving channel capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If overlapped multiplexing is used to achieve high spectrum efficiency, then spectrum efficiency is improved, but occupied bandwidth becomes excessively wide causing waste of frequency spectrum resources
Solution Approach 1:
The patent segments the occupied bandwidth into two distinct parts: the effective processing bandwidth (wa) where signal energy is concentrated and the out-of-band resources (wb-wa) that were previously wasted. This segmentation allows independent allocation and utilization of each band, transforming the waste problem into a resource optimization opportunity by allocating different services to different bandwidth segments.
2Reliability
If matched filtering is performed to filter out out-of-band signal interference, then signal processing quality is improved, but system performance loss occurs and out-of-band resources remain unused
Solution Approach 1:
The patent enables the out-of-band resources to serve themselves by allocating them to traditional communication signals that can independently utilize this bandwidth segment. This self-service approach eliminates the need for the overlapped multiplexing system to waste resources on filtering and processing these bands, while simultaneously putting the resources to productive use through traditional modulation schemes like QAM or PSK.
Data Source
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AI summary
The present invention discloses a frequency spectrum allocation method and apparatus for an overlapped multiplexing system, a storage medium, and a processor. The method includes: determining channel bandwidth for an overlapped multiplexing system, and obtaining first bandwidth for an overlapped multiplexing signal, where the first bandwidth is processing bandwidth for the overlapped multiplexing signal; obtaining second bandwidth other than the first bandwidth in the channel bandwidth for the overlapped multiplexing system; and allocating the second bandwidth to a non-overlapped-multiplexing signal. The present invention resolves a prior-art technical problem that bandwidth occupied by an overlapped multiplexing system is relatively wide but actual processing bandwidth is relatively narrow, causing a waste of frequency spectrum resources.