UWB communications: Present and future

Ngah, Razali; Zahedi, Yasser

doi:10.1109/apace.2016.7916463

Cited by 6 publications

(4 citation statements)

References 52 publications

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“…Among RF technologies, Ultra-Wideband (UWB) technology is very suitable for wearable communication applications such as human localization, tracking and activity monitoring [6][7][8][9][10]. UWB has attractive features such as fine time resolution, low cost, low power, robustness to multipath, compact antenna design and integration with other technologies [11][12][13][14]. An important aspect of the UWB body-centric communication is channel characterization of the wearable nodes which vary with different locations on the body, postures, and physical activities [15][16].…”

Section: Introductionmentioning

confidence: 99%

On-Body UWB Channel Classification and Characterization for Various Physical Exercises

Bharadwaj

Koul

2021

IEEE Access

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This paper presents classification, characterization and modelling of ultra-wideband (UWB) on-body channel links while performing various physical exercises. The physical exercises mainly focus on range-of-motion exercises in which the upper and lower limb movement is dominant. Such exercises are suitable for various applications in medical domain such as rehabilitation, physiotherapy, in sports for training and general-well-being. Wrist and ankle regions have been chosen for the wearable antenna placement and three different antenna orientations have been considered with respect to location on the limb, inner, outer, and front region. The channel for various activities has been classified into line of sight (LOS) and non-line of sight (NLOS) links based on computation of Kurtosis. On-body statistical analysis and distance-dependent study is performed on two important channel parameters, path loss magnitude and rms delay spread considering the LOS and NLOS links. The channel variation is attributed to the location/orientation of the antenna, Tx-Rx distance, obstruction caused by the human body and different categories of activities.

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Section: Introductionmentioning

confidence: 99%

On-Body UWB Channel Classification and Characterization for Various Physical Exercises

Bharadwaj

Koul

2021

IEEE Access

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“…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

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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.

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“…Ultrawide band (UWB) technology is based on the transmission of UWB signals, which is contrarily to the narrow band systems . Thanks to its high data rate communication and low power consumption, UWB can be an appropriate choice for the wireless multimedia applications.…”

Section: Introductionmentioning

confidence: 99%

Comparison of self‐adaptive dynamic differential evolution and particle swarm optimization for smart antennas in wireless communication

Chiu

Tong

Cheng

2019

Int J Communication

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In this paper, ultrawide band (UWB) communication systems with eight transmitting and receiving ring antenna arrays are implemented to test the bit error rate and capacity performance. By using the ray-tracing technique to compute any given indoor wireless environment, the impulse response of the system can be calculated. The synthesized beamforming problem can be reformulated into a multiobjective optimization problem. Self-adaptive dynamic differential evolution (SADDE) and particle swarm optimization (PSO) are used to find the excitation current and the feed line length of each antenna to form the appropriate beam pattern. This pattern can then reduce the bit error rate and increase the channel capacity and receiving energy. Numerical results show that the fitness value and the convergence speed by the SADDE are better than those by the PSO. Moreover, the SADDE had better results for both line-ofsight and nonline-of-sight cases. In other words, compared with PSO, SADDE has improved more effectively the main beam radiation energy and reduced the multipath interference.

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UWB communications: Present and future

Cited by 6 publications

References 52 publications

On-Body UWB Channel Classification and Characterization for Various Physical Exercises

On-Body UWB Channel Classification and Characterization for Various Physical Exercises

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

Comparison of self‐adaptive dynamic differential evolution and particle swarm optimization for smart antennas in wireless communication

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