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The mm wave band is expected to play a major role in future 5G networks for both indoor access point, and outdoor small cells such as lamp post to user. In this paper we present results of measurements performed in two frequency bands in the mm wave range: 30 GHz and 60 GHz performed indoor and outdoor where the 30 GHz measurements indicate the performance of dual polarized antennas at the transmitter...
Root polynomial (RP) pulses are considered for mitigating fiber nonlinearity for 128 Gb/s dual-polarization 8-ary quadrature-amplitude-modulation dense wavelength division multiplexed (DWDM) systems. RP pulses exhibit a fast asymptotic decay rate, low peak-to-average power ratio, and narrow pulse width. Consequently, they are tolerant toward intrachannel nonlinearity, digital-to-analog converter quantization...
The demand on portable and user-friendly wireless communication devices has geared up accordingly which necessitates optimal miniaturised built-in antenna for mobile terminals. This paper presents a design of a miniaturized circular microstrip L-probe wideband patch antenna for achieving diversity operation at mobile terminals. The design is optimised to cover the UMTS, LTE and WLAN. A prototype is...
Er3+-doped fluoride glass ceramics planar waveguides containing LaF3 or binary LaF3-ZrF4 nanocrystals have been fabricated by Physical Vapor Deposition (PVD). A quantitative analysis of the photoluminescence of the 1.54 µm emission band of Er3+ ions has demonstrated that erbium ions are partitioned in both crystals and vitreous phase. The solubility of Er3+ in the segregated LaF3 nanocrystals can...
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