Channelized IQ Mixing for Real-Time THz Wireless Communications
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Solution Overview
Problem
Existing technologies face challenges in implementing real-time wireless communication systems at terahertz frequencies due to high costs, power consumption, and impractical sizes of high-speed data converters, as well as limitations in reconfigurable platforms that fail to utilize the abundant bandwidth offered by the THz band.
Innovation Solution
A system utilizing a channelized back-end DSP architecture with RFSoCs and analog IQ mixers to produce sub-channel signals, which are frequency multiplexed and amplified, enabling real-time ultra-broadband THz wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed data converters are used to achieve real-time THz wireless communication, then communication bandwidth and data rate are improved, but cost, power consumption, and device size increase significantly
Solution Approach 1:
The patent divides the wide THz bandwidth into multiple narrow sub-channels, each processed by separate IQ mixers operating at lower speeds. This segmentation allows the system to achieve high aggregate bandwidth through parallel processing of multiple sub-channels rather than requiring a single high-speed converter, thereby reducing individual converter complexity and size while maintaining overall high productivity.
2Productivity
If high-speed data converters are used to achieve real-time THz wireless communication, then communication bandwidth and data rate are improved, but cost and power consumption increase significantly
Solution Approach 1:
The system segments the high-data-rate communication into multiple parallel sub-channels, each handled by lower-speed IQ mixers. The power consumption of individual low-speed converters is significantly less than a single high-speed converter, and the parallel architecture allows efficient resource utilization, thereby achieving high aggregate data rate with reduced total power consumption.
3Adaptability or versatility
If reconfigurable platforms are used to utilize THz bandwidth, then adaptability is improved, but they fail to efficiently utilize the abundant bandwidth offered by the THz band
Solution Approach 1:
The patent employs dynamically可调 IQ mixers with variable center frequencies that can be reconfigured to different sub-channel positions within the THz band. This dynamic reconfigurability allows the system to adapt to different communication scenarios while efficiently utilizing the abundant THz bandwidth through parallel processing of multiple frequency-diversified sub-channels, resolving the contradiction between adaptability and bandwidth utilization efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time ultra-broadband THz wireless communication with up to 8 GHz bandwidth, leveraging programmable hardware to efficiently process high-speed data converters and achieve communication links of 16 Gbps.
Implementation Method 1
a plurality of in-phase and quadrature (IQ) mixers configured to produce in real-time on a per-channel basis, sub-channel signals from respective analog baseband IQ signals
Implementation Method 2
a power combiner configured to produce a multi-channel output signal by frequency multiplexing, in real-time, the sub-channel signals produced
Data Source
AI summary
A system and corresponding method may be employed for real-time ultrabroadband wireless communications. The system comprised a plurality of in-phase and quadrature (IQ) mixers that produce, in real-time on a per-channel basis, sub-channel signals from respective analog baseband IQ signals representing respective portions of user data. The system further comprises a power combiner. The power combiner produces a multi-channel output signal by frequency multiplexing, in real-time, the sub-channel signals produced. The multi-channel output signal represents the user data in its entirety and may be a real-time, multi-GHz wireless signal.