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Owing to the requirement of power-hungry ultra-high-speed analogue-to-digital converters (ADCs), 60 GHz wireless local area network systems face the challenge of high energy consumption in idle listening (IL). To cope with this problem, a 1 bit-sampling IL (1BS-IL) scheme is proposed in this paper. This scheme includes a mixed 1/M-bit-sampling receiver, and a corresponding packet detection algorithm...
In this paper, we investigate performance comparison between Impulse-Radio Ultra-wideband (IR-UWB) and Direct Sequence UWB (DS-UWB) in realistic systems, where Matched-Filter (MF) receivers have finite quantization resolution. Bit-Error-Rate (BER) performance of a high-resolution MF receiver for IR-UWB and DS-UWB is analyzed and compared under typical UWB dispersive channels. Also, performance of...
Tracking constitutes a major challenge in Ultra-Wideband (UWB)communications due to dense multipath environment and low power consumption. Most of the existing studies on tracking fall within low rate Impulse Radio UWB (IR-UWB) scope, with the assumption that Inter-Frame Interference (IFI) or Inter-Symbol Interference (ISI) is absent. In this paper, we settle on high rate Direct-Sequence UWB (DS-UWB)...
This paper analyzes the interference in Direct Sequence Spreading Spectrum (DSSS) systems with Selective RAKE (SRAKE) receivers where channel delay is comparable with spreading sequence length. We build an accurate output model of SRAKE receiver and derive the output Signal to Interference-Noise Ratio (SINR) and Bit Error Rate (BER) of SRAKE receiver, taking multipath effect into consideration. Based...
The carrier direct-sequence spread based ultrawide-band (DS-UWB) is challenging for serious inter-symbol interference (ISI) problem, which is resulted from the dense multipath with a long root-mean-square (RMS) delay spread.We adopt a RAKE-decision feedback equalizer (RAKE-DFE) receiver in this paper to cancel the ISI. Different from the conventional selective RAKE (SRAKE), we proposed the optimum...
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