Measurement and characterization of ultra-wideband wireless interconnects within active computing systems

Abstract

Ultra-wideband (UWB) radio has become an attractive alternative for wireless communications due to the robustness to multipath fading, low power transmission, mostly-digital implementation, and low cost. Furthermore, short-range, high data-rates applications are possible with UWB radios due to the wide spectral allocations at 3.1 - 10.6 GHz. This thesis presents experimental measurements of UWB wireless interconnects within an operational computer system chassis. The purpose of the thesis is to analyze and verify the implementation of high-bandwidth wireless communications using an impulse-radio ultra-wideband (IR-UWB) 3.1 - 5 GHz transceiver within an enclosed, heavy multipath, metallic environment such as a computer server chassis. Bit-error-rate (BER) and recovered clock jitter were measured at various positions within the computer chassis. The results show a 6X improvement in BER after applying the equalizer to the noisy channel while the motherboard is fully operating

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