Multi-carrier Receiver Routed Switch Sub-carrier Allocation
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Solution Overview
Problem
Conventional multi-carrier transceiver systems require high complexity and hardware cost due to the need for ADCs with large dynamic range to handle sub-carriers with varying frequency differences, leading to inefficient use of hardware and increased power consumption.
Innovation Solution
A multi-carrier receiver and transmitter system that employs a routed switch to dynamically allocate sub-carrier signals to independent signal processing paths, reducing the bandwidth requirements and complexity by using a control signal to manage the allocation of sub-carriers across multiple paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ADCs with large dynamic range are used to handle sub-carriers with varying frequency differences, then signal quality is maintained, but hardware complexity and cost increase
Solution Approach 1:
The patent divides the multi-carrier signal processing into multiple independent signal processing paths, each handling a subset of sub-carriers. Each path uses an ADC with bandwidth matching only its assigned sub-carriers, rather than one ADC handling all sub-carriers. This segmentation allows each ADC to operate at lower complexity while collectively maintaining overall signal quality.
2Reliability
If ADCs with large dynamic range are used to handle sub-carriers with varying frequency differences, then signal quality is maintained, but power consumption increases
Solution Approach 1:
The patent segments the signal processing into multiple paths, each with ADCs sized for their specific bandwidth requirements. This reduces the total power consumption compared to using a single high-performance ADC, while still maintaining signal quality through coordinated processing of all sub-carrier paths.
Solution Approach 2:
Each signal processing path is designed with ADCs having bandwidth and dynamic range specifically matched to the local requirements of its assigned sub-carriers. This local optimization reduces overall power consumption while maintaining signal quality where needed.
3Reliability
If hardware circuits are designed to preserve maximum bandwidth, then signal quality is maintained, but hardware efficiency decreases
Solution Approach 1:
The patent employs a switch to dynamically allocate sub-carrier signals to different signal processing paths based on current transmission requirements. This dynamic allocation allows the hardware to efficiently match processing resources to actual needs, improving hardware efficiency while maintaining signal quality through appropriate path selection.
Data Source
AI summary
A multi-carrier receiver, multi-carrier transmitter and a multi-carrier transceiver system are provided. The multi-carrier receiver includes at least a first processing unit, a routed switch and a second processing unit. The first processing unit has M first processing paths, performs intensity processing to at least one RF signal for outputting sub-carrier signals. The routed switch has M input terminals and N output terminals, where the M input terminals are respectively coupled to the M first processing paths and receive the sub-carrier signals. The routed switch connects each input terminal to at least one output terminal or none of the output terminals according to a control signal. The second processing unit has N second processing paths respectively coupled to the N output terminals for demodulating the sub-carrier signals and performing an analog-to-digital conversion to the demodulated signals for generating digital signals, where M and N are greater than 0.