Ultra-Wideband Communication Systems and Techniques
Summary
Ultra-Wideband (UWB) communication encompasses wireless technologies that transmit data using extremely short pulses or wide contiguous frequency bands, typically exceeding 500 MHz of bandwidth. By virtue of low power spectral density, UWB systems coexist with narrowband services with minimal interference while offering high data rates, centimetre-scale localisation and robust multipath performance. Two principal approaches prevail: Impulse Radio (IR-UWB), which emits sub-nanosecond pulses directly in the time domain, and multiband OFDM-UWB, which subdivides the available spectrum into multiple orthogonal carriers. UWB techniques find applications in wireless sensor networks, real-time locating systems (RTLS), biomedical implants and broadband personal area networks. Key challenges include stringent regulatory masks, antenna design over multi-gigahertz spans, resistance to narrowband interference and power-efficient transceiver architectures. Recent advances focus on coherent and non-coherent receiver architectures, digital pulse shaping, integrated frequency-tuning mechanisms and novel modulation schemes to enhance range, energy efficiency and spectral fidelity.
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Ultra-Wideband Communication Systems and Techniques publication trend
The graph below shows the total number of articles in ultra-wideband communication systems and techniques across all publications each year (not limited to Nature Index journals).
Technical terms
Ultra-Wideband (UWB): Wireless transmission using very wide frequency bands or short time-domain pulses to achieve high data rates and precise ranging.
Impulse Radio (IR): A UWB variant emitting sub-nanosecond pulses without a continuous carrier, offering simple transceiver structures and fine time resolution.
Pulse Position Modulation (PPM): A scheme encoding information by varying the temporal position of pulses within a defined frame.
Phase-Locked Loop (PLL): A feedback control system that locks a voltage-controlled oscillator to a reference frequency, enabling wideband frequency synthesis.
Quadrature Voltage-Controlled Oscillator (QVCO): An oscillator generating two signals 90° apart in phase, facilitating coherent reception and I/Q demodulation.
Real-Time Locating System (RTLS): A technology that leverages UWB time-of-flight measurements to determine object or personnel positions with centimetre accuracy.
Energy Detection: A non-coherent receiver technique that measures the aggregate energy of received pulses to recover data without phase information.
References
- Challenges and Perspectives on Impulse Radio-Ultra-Wideband Transceivers for Neural Recording Applications. IEEE Transactions on Biomedical Circuits and Systems (2024).
- A 5–10-GHz Highly Configurable IEEE 802.15.4a/4z-Compatible IR-UWB Coherent Transmitter in 28-nm CMOS. IEEE Microwave and Wireless Technology Letters (2023).
- Integration and Prototyping of a Pulsed RF Oscillator with an UWB Antenna for Low-Cost, Low-Power RTLS Applications. Sensors (2021).
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