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The implementation of optimum detector for Chirp UWB system is complicated. autocorrelation demodulation (ACD) is a promising suboptimal demodulation method with low complexity. However, its poor performance is bottleneck. In this paper, chirp UWB system with an improved multiple-symbol ACD detector is proposed. Two different decision rules: ML and FB are proposed. The performance of ML detector is...
Synchronization and channel estimation are two of the most critical issues in ultra-wideband (UWB) communication systems. Conventional transmitted-reference (TR) UWB avoids the stringent synchronization and channel estimation requirements. In this work, we utilize transmitted reference technology to add reference pulses between data pulses in Chirp UWB transmitter. And in Chirp UWB receiver, a synchronization...
Time synchronization is a major challenge and a rich area of study in chirp ultra-wideband (UWB) communication systems. Since the pulse compressed by the matched filter is very short, the performance of chirp receivers is closely relative to precise timing acquisition. However, the existent method is very sensitive to noise. In this paper, we propose an improved synchronization method that allows...
This paper aims at an effective resource management scheme for ultra-wideband (UWB) networks where the inherent spread spectrum supports simultaneous transmissions. In specific, we present a transmission frame structure tailoring to the UWB characteristics, and develop a novel control message exchange procedure. Furthermore, we propose effective admission control and resource allocation algorithms...
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