Millimetre-Wave Fibre Link Pre-Equalization for Higher Throughput
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Solution Overview
Problem
Existing millimetre-wave communication systems using polymer millimetre-wave fibres face channel conditions with varying loss and bandwidth, requiring improvements to account for these unique characteristics.
Innovation Solution
A communication system with pre-equalizing filters in the in-phase and quadrature paths at the transmitter side to compensate for channel non-idealities, reducing intersymbol interference and eliminating the need for carrier recovery mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pre-equalizing filters are added to compensate for channel non-idealities, then intersymbol interference is reduced and throughput is improved, but device complexity increases
Solution Approach 1:
The patent applies pre-equalizing filters in the in-phase and quadrature paths before modulation to pre-compensate for channel non-idealities such as frequency-dependent loss and phase distortion. This preliminary action prevents intersymbol interference from occurring in the first place, rather than correcting it after transmission, thereby improving throughput while managing complexity through proactive signal conditioning.
2Reliability
If pre-equalizing filters are used to compensate for frequency-dependent loss, then signal quality is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements pre-equalizing filters that apply frequency-dependent gain adjustments to compensate for the frequency-dependent loss characteristics of the polymer mm-wave fibre. By modifying the signal parameters (amplitude and phase) across different frequency components before transmission, the system compensates for channel non-idealities and maintains signal quality without requiring extremely precise manufacturing tolerances in the physical layer components.
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
The system achieves higher throughput and reduced intersymbol interference, allowing for efficient data transmission in polymer millimetre-wave fibres without the need for costly conversions or precise alignments.
Implementation Method 1
a polymer millimetre-wave fibre arranged to propagate the transmit millimetre-wave signal
Data Source
AI summary
A communication system operable in the millimetre-wave spectrum including: a transmitter arranged to emit a transmit millimetre-wave signal, a polymer millimetre-wave fibre arranged to propagate the transmit millimeter-wave signal, a receiver arranged to receive the propagated transmit millimeter-wave signal. The transmitter is arranged to receive an input signal and includes: an in-phase path and a quadrature path for the input signal, modulation means for performing modulation with a millimetre wave carrier signal, amplifier means, combiner means. The in-phase path and the quadrature path each has a pre-equalizing filter to filter the input signal, prior to applying the input signal to the modulator means, amplifier means and combiner means.