The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Devido às características de baixa complexidade e custo dos sistemas de banda ultralarga (UWB), um algoritmo de aquisição ponderada baseado na detecção de energia é proposto neste artigo. Este método é dividido em duas etapas para adquirir o componente de caminho direto (DP). Primeiramente, a detecção de energia ponderada é aplicada para determinar em qual bloco de energia o DP se encontra pelo teste de razão de verossimilhança generalizada (GLRT). Obtém-se um vetor ponderado subótimo, pelo qual é proposta a forma fechada de desempenho de detecção. Na segunda etapa, a posição precisa do DP dentro do bloco de energia detectado é obtida pelas características estatísticas das distribuições de energia do canal. Os principais parâmetros que afetam o desempenho da aquisição são estudados por métodos analíticos e numéricos. Simulações e experimentos são realizados para comparação de desempenho e complexidade com os tradicionais. Os resultados mostram que a aquisição ponderada alcança melhor desempenho em condições de complexidade relativamente baixa.
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Tingting ZHANG, Qinyu ZHANG, Naitong ZHANG, Hongguang XU, "Weighted Acquisition of UWB Signals Based on Energy Detection" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 3, pp. 560-570, March 2010, doi: 10.1587/transcom.E93.B.560.
Abstract: Due to the low complexity and cost characteristics of ultra-wideband (UWB) systems, a weighted acquisition algorithm based on energy detection is proposed in this paper. This method is divided into two steps to acquire the direct path (DP) component. Firstly, weighted energy detection is applied to determine which energy block the DP lies in by generalized likelihood ratio test (GLRT). A sub-optimal weighted vector is obtained, by which the closed form of detection performance is proposed. In the second step, the precise position of DP within the detected energy block is obtained by the statistical characteristics of the channel energy distributions. Key parameters that affect acquisition performance are studied by analytical and numerical methods. Simulations and experiments are carried out for performance and complexity comparison with traditional ones. The results show that weighted acquisition achieves better performance under relative low complexity conditions.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.560/_p
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@ARTICLE{e93-b_3_560,
author={Tingting ZHANG, Qinyu ZHANG, Naitong ZHANG, Hongguang XU, },
journal={IEICE TRANSACTIONS on Communications},
title={Weighted Acquisition of UWB Signals Based on Energy Detection},
year={2010},
volume={E93-B},
number={3},
pages={560-570},
abstract={Due to the low complexity and cost characteristics of ultra-wideband (UWB) systems, a weighted acquisition algorithm based on energy detection is proposed in this paper. This method is divided into two steps to acquire the direct path (DP) component. Firstly, weighted energy detection is applied to determine which energy block the DP lies in by generalized likelihood ratio test (GLRT). A sub-optimal weighted vector is obtained, by which the closed form of detection performance is proposed. In the second step, the precise position of DP within the detected energy block is obtained by the statistical characteristics of the channel energy distributions. Key parameters that affect acquisition performance are studied by analytical and numerical methods. Simulations and experiments are carried out for performance and complexity comparison with traditional ones. The results show that weighted acquisition achieves better performance under relative low complexity conditions.},
keywords={},
doi={10.1587/transcom.E93.B.560},
ISSN={1745-1345},
month={March},}
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TY - JOUR
TI - Weighted Acquisition of UWB Signals Based on Energy Detection
T2 - IEICE TRANSACTIONS on Communications
SP - 560
EP - 570
AU - Tingting ZHANG
AU - Qinyu ZHANG
AU - Naitong ZHANG
AU - Hongguang XU
PY - 2010
DO - 10.1587/transcom.E93.B.560
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2010
AB - Due to the low complexity and cost characteristics of ultra-wideband (UWB) systems, a weighted acquisition algorithm based on energy detection is proposed in this paper. This method is divided into two steps to acquire the direct path (DP) component. Firstly, weighted energy detection is applied to determine which energy block the DP lies in by generalized likelihood ratio test (GLRT). A sub-optimal weighted vector is obtained, by which the closed form of detection performance is proposed. In the second step, the precise position of DP within the detected energy block is obtained by the statistical characteristics of the channel energy distributions. Key parameters that affect acquisition performance are studied by analytical and numerical methods. Simulations and experiments are carried out for performance and complexity comparison with traditional ones. The results show that weighted acquisition achieves better performance under relative low complexity conditions.
ER -