Low Complexity Acquisition of UWB Telemetry Data Packets with Clock Offset

—In this paper, low complexity acquisition of UWB telemetry data packets is addressed. In addition to the usual channel impairments considered of additive white Gaussian noise (AWGN) noise and multipath, the sensor clock is assumed to be unsynchronized relative to the access node such that there is a random clock offset. The proposed method involves a multihypothesis outer search over the arrival time of the packet. For each arrival time hypothesis, a simple and low complexity twostage practical acquisition algorithm based on dirty template (DT) which is called multi-stage DT (MSDT) is utilized to estimate and extract a template suitable for the data decoding. For this algorithm symbol level (SL) acquisition is achieved first based on symbol-long DT (SLDT). Next, the frame level (FL) acquisition is obtained using frame-long DT (FLDT), which further enhances the acquisition accuracy by employing processing gain within each UWB symbol waveform. Performance of this proposed algorithm is...

• Type: Conference
• Year: 2008
• Where: VTC
• Authors: Saeed Khalesehosseini, John Nielsen
• Keywords: Acquisition Algorithm, Communications, Low Complexity Acquisition, UWB Telemetry Data, VTC 2008