Wavelet Spectrum Allocation for Underused Frequency-Time Cells
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently utilizing limited communication spectrum resources due to finite and shared bandwidth, leading to suboptimal spectrum utilization and interference between channels.
Innovation Solution
The implementation of wavelet signal generation and analysis to identify and utilize frequency-time cells with little or no signal activity, allowing for dynamic allocation of transmission resources by generating wavelet carrier signals for transmission in available channels during communication inactivity periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional access technologies (FDMA, TDMA, CDMA, OFDM) are used to allocate spectrum resources, then communication channels can be established for multiple users, but spectrum utilization becomes suboptimal due to rigid pre-designed channel allocations and guard bands
Solution Approach 1:
The patent implements dynamic spectrum allocation by allowing communication channels to adapt their frequency and time resources based on real-time spectrum conditions. Instead of fixed pre-designed channels, the system continuously monitors spectrum usage and dynamically assigns frequency-time cells to users, enabling spectrum resources to be flexibly reallocated according to actual demand and availability.
Solution Approach 2:
The system changes the parameters of channel allocation by transitioning from fixed frequency and time assignments to variable assignments. The patent modifies allocation parameters dynamically based on detected spectrum conditions, adjusting which frequency-time cells are assigned to which users, thereby optimizing spectrum utilization efficiency and reducing wasted resources.
2Reliability
If guard bands are inserted between frequency channels to avoid adjacent channel interference, then channel isolation is improved, but available transmission bandwidth is reduced
Solution Approach 1:
The patent extracts and removes the traditional guard band requirement by implementing interference cancellation techniques. Instead of allocating unused frequency bands as guard bands, the system actively detects and cancels adjacent channel interference through signal processing, thereby eliminating the need for guard bands and recovering the bandwidth that would otherwise be wasted.
3Device complexity
If pre-designed channel allocations are used to simplify resource management, then system complexity is reduced, but adaptability to varying spectrum conditions deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors spectrum conditions and uses this information to dynamically adjust channel allocations. The feedback loop detects spectrum usage patterns, identifies available frequency-time cells, and reallocates resources accordingly, enabling the system to adapt to varying spectrum conditions while maintaining automated resource management.
Data Source
AI summary
A wireless communication system comprises a wavelet analyzer and a wavelet signal generator. The wavelet analyzer is operable to analyze wireless signals within a frequency and time map of a communications spectrum, whereby the wavelet analyzer is adapted to determine one or more available cells within the frequency and time map. The wavelet signal generator is operable to generate one or more wavelet signals for transmission within the determined one or more available cells of the frequency and time map based on the analyzed wireless signals within the frequency and time map.