Transmission of Ultra Wide Band Radio Using Multimode Radio-over-Fiber System

Enhanced bit rate-distance product impulse radio ultra-wideband over fiber link

“…In this case, error-free reception of 2 Gb/s after 6 m FCC compliant wireless transmission was achieved. Compared with the previous reports [2,3], we employed 5th order Gaussian UWB pulse shape exploits more efficiently to the available spectrum, and by using an improved combination of antennas for transmission and reception, we demonstrate the enhanced reach and bit rate-performance. Figure 1 shows the experimental setup.…”

“…Compliance with FCC regulation not only ensures nonproblematic coexistence with other wireless technologies, such as GPS, WiMax, and UMTS but also facilitates the use of wireless communication in RF-sensitive environments, for example, hospitals and airplane cabins. The low-emitted RF-power, however, has so far limited transmission distances to, for example, 65 cm at 500 Mb/s [2], or 90 cm at 1 Gb/s [3]. In this article, we propose and experimentally demonstrate wireless transmissions of FCC-compliant impulse radio UWB signals at 4 Gb/s over 4 m, and 2 Gb/s over 8 m corresponding to a bit rate-distance product, which to best of the authors knowledge are higher than previously reported.…”

System Wide Implementation of Photonically Generated Impulse Radio Ultra-Wideband for Gigabit Fiber-Wireless Access

“…In principle, the higher OOK bit rate is, the more number of pulses the FCC compliant UWB signal contains, thus leading to a lower signal-to-noise ratio (SNR) and less wireless propagation distance. Considerable effort has therefore recently been devoted to simultaneously increasing wireless distance and bit rate, for instance, 250 Mbps 75 cm [35], 500 Mbps 65 cm [36], 625 Mbps 20 cm [37], 1.025 Gbps 20 cm [38], 1 Gbps 90 cm [39], and 1.625 Gbps wireless transmission over an unspecified distance [40] have been performed with OOK modulation format. To further extend the UWB wireless distance-bit rate product, the challenge lies in developing a superior receiver with better receiver sensitivity.…”

Fiber extended ultra‐wideband radar for breath tracking through 10 cm concrete

“…Ultra‐wideband (UWB) systems has been extensively investigated as an enabling technology for high speed wireless communications with low emission power ; as UWB spreads the information over a wide portion of the radio spectrum, it is also highly compatible with other wireless technologies . This technology is a suitable technology in distributed antenna systems (DAS) , where large amount of broadband Wi‐Fi antennas are deployed to provide coverage to highly dense indoor areas thus it allows to increase the overall system capacity by having multiple technologies working in liaison to provide connectivity.…”