Performance Evaluation of an IEEE 802.15.4a Physical Layer with Energy Detection and Multi-User Interference

Flury, Manuel; Merz, Ruben; Boudec, J.-Y. Le; Zory, J.

doi:10.1109/icuwb.2007.4381027

Cited by 26 publications

(34 citation statements)

References 14 publications

(21 reference statements)

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“…For packet detection, PICNIC uses a correlation-based packet detection algorithm as in [11] and [16]. However, the novelty of PICNIC and its robustness to interference rely on 1) a preprocessing prior to the correlation of the received signal using thresholding and 2) a postprocessing of the correlation output with an interference detection and cancellation mechanism.…”

Section: ) Summary Of Our Contributionsmentioning

confidence: 99%

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Synchronization for Impulse-Radio UWB With Energy-Detection and Multi-User Interference: Algorithms and Application to IEEE 802.15.4a

Flury

Merz

Boudec

2011

IEEE Trans. Signal Process.

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Abstract-Energy-detection (ED) receivers can take advantage of the ranging and multipath resistance capabilities of impulseradio ultra-wideband (IR-UWB) physical layers at a much lower complexity than coherent receivers. However, ED receivers are extremely vulnerable to multi-user interference (MUI). Therefore, the design of IR-UWB ED architectures must take MUI into account. In this paper, we present the design and evaluation of two complementary algorithms for reliable and robust synchronization of IR-UWB ED receivers in the presence of MUI: 1) powerindependent detection and preamble code interference cancellation (PICNIC) and 2) detection of start-frame-delimiter through sequential ratio tests (DESSERT). PICNIC addresses packet detection and timing acquisition while DESSERT focuses on startframe-delimiter (SFD) detection. Both algorithms are evaluated with the IEEE 802.15.4a IR-UWB physical layer, standardized for low data-rate networks. The performance evaluation with extensive simulations show that our algorithms outperform nonrobust synchronization algorithms by up to two orders of magnitude in the presence of MUI.Index Terms-IEEE 802.15 standards, interference cancellation, multiple-access interference, ultra-wideband communication.

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Section: ) Summary Of Our Contributionsmentioning

confidence: 99%

“…And not accounting for MUI with an ED architecture can greatly degrade system performance, even at low data-rates [11], [12]. One option to prevent MUI is to coordinate medium access, for instance, with carrier sensing.…”

mentioning

confidence: 99%

Synchronization for Impulse-Radio UWB With Energy-Detection and Multi-User Interference: Algorithms and Application to IEEE 802.15.4a

Flury

Merz

Boudec

2011

IEEE Trans. Signal Process.

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“…In near-far cases (the additional transmitters have 10dB higher power), there is still a significant performance increase compared to the worst case "Destructive Collisions" curve. Note that with a conventional receiver where no thresholding is done, the near-far cases correspond to the "Destructive Collisions" curve already at a lower rate of λ = 10 pkts/s [4].…”

Section: Permentioning

confidence: 99%

“…In [4], the performance of an IEEE 802.15.4a compliant energy-detection receiver is analyzed in the presence of several transmitters using an Aloha medium access control (MAC)…”

Section: Introductionmentioning

confidence: 99%

An energy detection receiver robust to multi-user interference for IEEE 802.15.4a networks

Flury

Merz

Boudec

2008

2008 IEEE International Conference on Ultra-Wideband

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Abstract-Energy-detection receivers are appealing to IEEE 802.15.4a low data-rate networks because of their low complexity. With a reasonable energy consumption, these receivers can exploit the ranging capabilities and multipath resistance of impulse-radio UWB (IR-UWB). However, the performance of energy-detection receivers can be severely degraded by multi-user interference (MUI). One solution may be to coordinate access to the physical layer with an exclusion protocol. Unfortunately, this cannot prevent MUI due to uncontrolled activities in neighboring networks (e.g., several IEEE 802.15.4a piconets running in parallel). Hence, interference must be taken into account already in the design of the physical layer. In this paper, we present an IR-UWB receiver robust to MUI for IEEE 802.15.4a networks. Its architecture is based on energy detection. We also take into full account the different signaling structure between the preamble and the payload of IEEE 802.15.4a packets. In certain scenarios with MUI we found the packet error rate to be up to two orders of magnitude lower when compared to a traditional energy detection receiver that neglects MUI. Further, this significant performance improvement entails only a moderate increase in complexity.

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“…The available literatures in this area have already analyzed the system performance in the presence of narrowband interference, multiuser interference, and multipath interference [3][4][5][6][7][8]. Reference [3] and [4] mainly discussed multiuser interference and proposed the energy-detection receiver and non-linear filtering approach to mitigate such interference. Reference [5] mainly investigated the system performance of IR-UWB with narrow band interference (NBI) and concluded that NBI will greatly worsen system performance.…”

Section: Introductionmentioning

confidence: 99%

Multipath interference analysis of IR-UWB systems in indoor office LOS environment

Chao

Cao

2011

2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)

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Abstract-Bit error rate (BER) performance of impulse radio Ultra-Wideband (UWB) systems in the presence of intrasymbol interference, inter-symbol interference, multiuser interference and addictive white Gaussian noise (AWGN) is presented in this paper. By analyzing the indoor office LOS channel model defined by IEEE 802.15.4a Task Group and deducing the variance for intra-symbol interference (IASI), inter-symbol interference (ISI) and multiuser interference (MUI), the system BER expression is obtained and verified by MATLAB simulations. Through comparing the simulation results with and without intra-symbol interference, the conclusion that intra-symbol interference cannot be neglected is drawn-moreover, such interference will significantly decrease performance of UWB based wireless sensor networks (WSN). Then, the BER performance of UWB systems in multiuser environment is also analyzed and analysis results show that multiuser interference will further worsen the transmission performance of UWB systems.

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Performance Evaluation of an IEEE 802.15.4a Physical Layer with Energy Detection and Multi-User Interference

Cited by 26 publications

References 14 publications

Synchronization for Impulse-Radio UWB With Energy-Detection and Multi-User Interference: Algorithms and Application to IEEE 802.15.4a

Synchronization for Impulse-Radio UWB With Energy-Detection and Multi-User Interference: Algorithms and Application to IEEE 802.15.4a

An energy detection receiver robust to multi-user interference for IEEE 802.15.4a networks

Multipath interference analysis of IR-UWB systems in indoor office LOS environment

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