Periodic PN sequence delay estimation using phase spectrum data

Kosbar, Kurt; Zaninovich, J.J.

doi:10.1109/glocom.1993.318352

Cited by 7 publications

(10 citation statements)

References 5 publications

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“…The ranging error, measured in mean absolute error (MAE) for 60 measurements, of the MPOC and POC [5] is compared in Fig. 6.…”

Section: Ranging Performancementioning

confidence: 99%

“…Fig. 5 shows the ToA detection outputs of the conventional correlator [4], POC [5], APOC [6], and the proposed kurtosis-based MPOC. BAPOC [7] is not suitable for UWB ranging and is not investigated because the binarization operation in BAPOC introduces severe pulse shape distortion and hence highly erratic impact on the correlator output.…”

Section: Ranging Performancementioning

confidence: 99%

“…Correlators that rely on phase spectrum matching are called "phase correlators", a variety of which have been proposed for the timing recovery of wireless signals. In PhaseOnly Correlator (POC) [5], the Fourier spectrum of both the received signal and the local template are first normalized by their respective spectral amplitudes and then multiplied. As a result of its flattened spectrum, the POC output is impulselike, with the correlation peak much narrower than that of the conventional correlator.…”

Section: Introductionmentioning

confidence: 99%

“…Comparison of ranging performance of the proposed MPOC and POC[5]. The ranging error is the Mean Absolute Error (MAE).…”

mentioning

confidence: 99%

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Modified Phase-Only Correlator with Kurtosis-Based Amplified-Noise Suppression

Zhou

Guan

Law

2010

IEEE Trans. Wireless Commun.

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In this paper, a Modified Phase-Only Correlator (MPOC) is proposed for resolving overlapped Ultra Wideband (UWB) radio pulses in order to achieve high-resolution multitarget UWB ranging. A Phase-Only Correlator (POC) is able to deconvolve the multi-target UWB channel from the received signal spectrum and its impulse-like output enables it to resolve UWB signals that are overlapping. However, the deconvolved channel is often corrupted by amplified noise arising from spectral nulls in the local template. To mitigate this problem, a MPOC which consists of a POC followed by a kurtosis-based noise suppression module is developed to suppress the amplified noise while maintaining the sharpness of the MPOC output. This enables the MPOC to achieve Time-of-Arrival (ToA) resolution much smaller than the UWB pulse duration. The excellent ToA detection performance of the proposed MPOC is verified by experimental measurement.

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“…The ranging error, measured in mean absolute error (MAE) for 60 measurements, of the MPOC and POC [5] is compared in Fig. 6.…”

Section: Ranging Performancementioning

confidence: 99%

Section: Ranging Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Comparison of ranging performance of the proposed MPOC and POC[5]. The ranging error is the Mean Absolute Error (MAE).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Modified Phase-Only Correlator with Kurtosis-Based Amplified-Noise Suppression

Zhou

Guan

Law

2010

IEEE Trans. Wireless Commun.

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“…The received signal is sampled by 16 sampling points per pulse (as in [56]) and correlated with a local template using the conventional correlator [14,15], POC [55,56], APOC [57], and MPOC [61,64]. The number of channel paths is fixed at 4.…”

Section: Simulation Resultsmentioning

confidence: 99%

Indoor localization with ultra wideband radio

Zhou¹

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Location-awareness has been drawing significant attention in recent years. In particular, the emerging Ultra Wideband (UWB) technology has the potential to revolutionize the systems and applications in many sectors. Due to its fine temporal resolution, UWB radio is especially promising for localization in indoor environment. This thesis focuses on two-step localization and investigates the UWB technology for indoor localization. xi

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A low-power digital matched filter for direct-sequence spread-spectrum signal acquisition

Lieu

Chiueh

2001

IEEE J. Solid-State Circuits

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This paper presents a low-power 128-tap dual-channel direct-sequence spread-spectrum (DSSS) digital matched-filter chip. Design techniques used to reduce the power consumption of the system include latch-based register file filter structure, a high-rate compression scheme, optimized compressor cells, and semicustom layout design. To further reduce the power consumption and the hardware requirement of the clock tree, a double-edge-triggered clocking scheme is adopted. The proposed chip is fabricated using a 0.8-m standard CMOS process. As the experimental results of the chip indicate, the matched filter can operate at 50 MHz and dissipates 184 mW at 5-V supply voltage. The supply voltage can be scaled down to 2 V for lower speed applications. As a consequence, the proposed design has low power consumption and can be used for code acquisition of DSSS signals in portable systems.

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Periodic PN sequence delay estimation using phase spectrum data

Cited by 7 publications

References 5 publications

Modified Phase-Only Correlator with Kurtosis-Based Amplified-Noise Suppression

Modified Phase-Only Correlator with Kurtosis-Based Amplified-Noise Suppression

Indoor localization with ultra wideband radio

A low-power digital matched filter for direct-sequence spread-spectrum signal acquisition

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