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Ultrawideband system with digital beamforming allows for spatial filtering and multiuser detection without degradation of the signal-to-noise ratio (SNR). Along these lines, we propose a novel on-site coding receiver (OSCR) architecture for digital beamforming that has already been verified to significantly reduce hardware requirement at the analog back end. Using OSCR, the signal from each antenna...
Ultra-wideband (UWB) systems with digital beam forming are essential to realizing cognitive and software defined radios. Concurrently, advances in digital signal processing hardware and algorithms have allowed for increased data rate handling, large memory blocks, and adaptivity. Therefore, these digital back-ends have drastically reduced the complexity of digital beamforming. Consequently, techniques...
Recently, a novel receiver architecture with on-site coding was proposed to reduce the number of analog-to-digital converters behind antenna array elements. To realize digital beamforming using this receiver, it is important to faithfully recover the phase difference between adjacent signal paths at the digital baseband. In this paper, the impact of on-site coding on the phase error is examined for...
We propose an experimental validation of a novel hardware-reduced digital beamformer. The novelty of this receiver is a coding technique so that a single analog-to-digital converter serves all antenna array elements. We present a two-channel component implementation (with COTS components) of this receiver using Walsh-Hadamard codes of length 8. The main purpose of this implementation is to establish...
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