Use of UWB Impulse Radio Technology in In-Car Communications: Power Limits and Optimization

Krébesz, Tamás; Tse, Chi K.; Lau, Francis C. M.; Dong, Hairong

doi:10.1109/tvt.2017.2647849

Cited by 20 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The received pulse at the receiver in the far-field incorporated with the measurement noise (variation in the steering delay and the amplitude of IR-UWB pulse) is given in Eq. (8). A random jitter "J R (i)" of ±25 ps in the steering delay and random variation of amplitude "k R (i)" of IR-UWB pulse by 10% is incorporated into the simulation as measurement noise.…”

Section: Simulations and Analysismentioning

confidence: 99%

“…Under this limit, the peak power level of the low PRF system depends on the pulse shape and increases with 20Log 10 (B), where B is the bandwidth of the UWB pulse. EIRP can be as high as 32 dBm for pulse shape that occupies 2 GHz bandwidth [6][7][8]. After the declaration of unlicensed spectrum, IR-UWB technology has drawn the attention of researchers around the globe for wide-range of promising applications such as indoor positioning and tracking [9][10][11], vital sign detection [12][13][14], ultra-fine infant movement detection [15], real-time monitoring of highways and bridges, and other civil infrastructures [1,16,17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Beam-Pattern Analysis of Multi-Beam High Peak Power Ir-Uwb Transmitter Tag for Indoor Positioning and Tracking System

Ansari¹,

Law²

2020

PIER B

View full text Add to dashboard Cite

The precise positioning of an autonomous robot in the wireless sensor network with a high refresh rate is important for well-ordered and efficient systems. An orthogonally transmitted simultaneous multi-beam system improves the geometric dilution of precision (GDOP) and expedites the refresh rate of the system. In this paper, the beam-pattern analysis of an electronically steerable multibeam impulse radio ultra-wideband (IR-UWB) transmitter tag is presented and demonstrated. The multi-beam transmitter tag is optimized to improve the real-time positioning accuracy of an autonomous robot for an indoor positioning and tracking system. Two linear arrays of four elements with an interelement spacing of 18 cm and 10.2 cm are proposed and optimized. The array with spacing 10.2 cm is intentionally configured to produce orthogonal beams, which eventually provides better geometric dilution of precision. The beam steering-angle analysis is performed to better utilize the steering delay range and scanning angle range. The radiation intensity in the direction of the transmitted beam is calculated. Consequently, an intensity table for the Gaussian-modulated multi-cycle IR-UWB beamforming array is proposed. The intensity table gives an easier way to calculate the peak intensity and the number of cycles of the radiated IR-UWB pulse in the transmitted beam direction. The proposed beamforming transmitter arrays are observed to achieve the scanning range from −60 • (−90 •) to +60 • (+90 •) with a scanning resolution of 5 • and 8 • in the measurements.

show abstract

Section: Simulations and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Beam-Pattern Analysis of Multi-Beam High Peak Power Ir-Uwb Transmitter Tag for Indoor Positioning and Tracking System

Ansari¹,

Law²

2020

PIER B

View full text Add to dashboard Cite

show abstract

“…In [27], the power limit of pulsed signals considering the interference in in-car communication was discussed. A multi-user interference (MUI) and inter-symbol interference (ISI) problem in pulse-based communication systems was considered and a deep learning (DL) based receiver was designed to suppress MUI and ISI in [32].…”

Section: Introductionmentioning

confidence: 99%

Pulse-Based ISAC: Data Recovery and Ranging Estimation for Multi-Path Fading Channels

Cai

Chen

et al. 2023

IEEE Trans. Commun.

View full text Add to dashboard Cite

Pulse-based integrated sensing and communication (ISAC) systems have the advantages of high ranging resolution and strong resistance to self-interference, compared with continuous wave (CW) based systems. However, for pulse-based ISAC systems, multi-path channels pose various challenges to data recovery and ranging by providing diversity gain for data recovery but incurring the interference to the identification of the first path in ranging. In this paper, we design a pulse-based ISAC receiver for multi-path channels. The designed receiver can obtain the diversity gain by correlating the received signal with the estimated template signal. Meanwhile, it can detect the arrival of the first path by using a threshold detection method based on a constant false alarm rate (CFAR). Furthermore, we extend the pulse-based ISAC design to a low-resolution analog-to-digital converter (ADC) scenario. A low-cost receiver design is provided for the pulse-based ISAC system that can recover data and estimate range simultaneously considering the non-linear effect caused by the low-resolution ADC. Simulation results show that compared with the generalized maximum likelihood (GML) based receiver, the proposed full-resolution pulse-based ISAC receiver has 1dB signal-to-noise ratio (SNR) loss in bit error rate (BER) and almost the same mean squared error (MSE) performance with the significantly reduced computational complexity. Also, compared with the full-resolution ISAC receiver, the ISAC receiver with 3-level quantization incurs only 0.8dB SNR loss in BER and 1dB SNR loss in MSE.

show abstract

“…Currently, UWB continues to promise enormous advantages to increase precision for indoor location, especially where satellite services do not work well 11 . Also, the improvement of UWB transmission techniques and all the elements of the RF chain continues to be a hot topic of research, with emphasis on different applications related to IoT and smart cities, 12 assistance to the elderly, 13 in‐car communications, 14 and wireless sensor networks 15,16 . All these applications are based in short‐range communications either with impulse radio (IR) or multiband orthogonal frequency division multiplexing (MB‐OFDM) signals; many of which, require high data rates with reliable channels in distances of a few meters.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐wideband technology: Prospective solution for 5G ultra‐small cell networks

Puerta

Rommel

Jaramillo-Ramírez

et al. 2020

Int J Communication

View full text Add to dashboard Cite

SummaryExhaustive research is being done to establish the technologies and standards of the fifth generation (5G) of wireless communication systems. Some of the most challenging requirements of 5G systems are to increase the spectral efficiency and the capacity by a factor of 10 and 1,000, respectively. New technologies must offer an adequate framework for the 5G uses cases, which will enable higher capacities and the flexibility to adapt to dynamic scenarios. To cope with these challenging demands, a compelling approach is to exploit the current radio service bands by means of spectrum sharing and cooperation techniques, which alleviate the bandwidth requirements. In addition, advanced modulation schemes have a fundamental role in ensuring the best usage of the spectrum available in band‐limited systems. In this manuscript, we present the ultra‐wideband (UWB) technology as a prospective solution for 5G picocells and femtocells. Its main feature is its capability to operate simultaneously, without introducing interference, with current radio services on an unlicensed basis. We report experimental results reaching data rates up to 35 Gbit/s using the multiband approach of carrierless amplitude phase (MB‐CAP) modulation. To validate the versatility of the proposed system, our experimental tests were performed under the UWB regulations defined by the United States' Federal Communications Commission (FCC), the European Electronic Communications Committee (ECC), and the Russian State Committee for Radio Frequencies (SCRF). The regulations chosen provide diversity enough to demonstrate the capacity of MB‐CAP modulation to comply with worldwide regulations.

show abstract

Use of UWB Impulse Radio Technology in In-Car Communications: Power Limits and Optimization

Cited by 20 publications

References 20 publications

Beam-Pattern Analysis of Multi-Beam High Peak Power Ir-Uwb Transmitter Tag for Indoor Positioning and Tracking System

Beam-Pattern Analysis of Multi-Beam High Peak Power Ir-Uwb Transmitter Tag for Indoor Positioning and Tracking System

Pulse-Based ISAC: Data Recovery and Ranging Estimation for Multi-Path Fading Channels

Ultra‐wideband technology: Prospective solution for 5G ultra‐small cell networks

Contact Info

Product

Resources

About