The effect of UWB interference on the DCS-1800 and GSM-900 downlink is studied for different UWB power density. For high UWB power density (-70 dBm/MHz), the effect of UWB signals is very high when the distance between UWB transmitter and DCS-1800 receiver is less than 1 m. For low UWB power density (-100 dBm/MHz), the effect of the UWB signals is quasi null even if the distance between the UWB...

In this paper, we consider the possibility of developing an optimal medium access control (MAC) layer for high data rate ultra-wideband (UWB) transmission systems that transmit minimal power. MAC in UWB wireless networks is required to coordinate channel access among competing devices. The unique UWB characteristics offer great challenges and opportunities in effective UWB MAC design. We first ...

Millimeter-accuracy Ultra-Wideband (UWB) positioning systems using the Time Difference Of Arrival (TDOA) algorithm are able to be utilized in military and many other important applications. Previous research on UWB positioning system has achieved up to mm or sub-mm accuracy. However, one bottleneck in UWB system is at sampling high resolution UWB signals, as well as high resolution timing infor...

<span>In this article, a planar monopole two-element multiple input output (MIMO) array has been designed and characterized with the intention of ultra-wideband (UWB) applications. The voltage standing wave ratio (VSWR) working bandwidth (BW) 13.258 GHz between 3.394-16.652 GHz, fractional BW (FBW) 132.28% respect to center frequency 10.023 GHz. two elements MIMO are 900 polarizations mis...

In this paper, we propose a human pose estimation algorithm for an impulse radio ultra-wideband (IR-UWB) radar based on the transformer-based deep learning model. We have built IR-UWB system with 8-by-8 multiple-input multiple-output (MIMO) antenna array. The in our paper is advantageous through-wall detection application since it operates very low frequency range (i.e., 0.45 to 3.55 GHz) compa...

Ultra Wide Band (UWB) wireless transmission has recently been the object of considerable attention in the field of next generation location aware wireless sensor networks (WSNs). This is due to its fine time resolution, energy efficiency and robustness to interference in harsh environments. This paper presents a thorough applied examination of prototype IEEE 802.15.4a impulse UWB transceiver te...

For wireless transmission, the channel estimation is necessary to improve the performance of receiver. In the ultra-wideband (UWB) wireless systems, there are two practicable modulation schemes: orthogonal frequency-division multiplexing (OFDM) and single-carrier direct-sequence UWB (DS-UWB). The OFDM based scheme is an attractive mode because it can capture the multipath energy more efficientl...

This paper presents the design of an H-band planar antenna array with broad bandwidth and narrow beam width for IR-UWB radar application. The basic single wideband microstrip is achieved by adding slots inset-fed technique. Then, we proposed a on limited area that obtains essential beamwidth Non-Contact Human Vital Signs Detection experimental simulated results are in good agreement. measured s...