کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4954759 | 1443906 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Trade-off between node selection and space diversity for accurate uncooperative localization
ترجمه فارسی عنوان
مقابله بین انتخاب گره و تنوع فضایی برای محلی سازی دقیق عدم همکاری
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کلمات کلیدی
قدرت سیگنال دریافتی، جنبه انتخابی، تنوع فضایی، آستانه بهینه، واریانس سایه، احتمال شکست
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
We consider Received Signal Strength (RSS) based localization and trade-off between space diversity and node selection approaches in terms of localization accuracy. In LOS/NLOS (Line Of Sight/Non Line Of Sight) mixed environment and uncooperative scenario, we show that when shadowing variance increases, we move from a first region where diversity is preferable to selectivity (use of all RSS leads to better accuracy) to a second region where selective aspect leads to better performance (use of higher RSS). Thus, the idea of computing an optimum threshold Ïoptimal2 on the shadowing variance (respectively γoptimal on the RSS values) which represent the edge between these two regions. This threshold, γoptimal, will indeed help to trade-off between using all nodes or only a subset of them for more accurate localization. The closed form expression for the failure rate, defined as the event when all RSS measures are below a threshold value, (RSS < γoptimal) is first derived. Then, we proposed a scheme for optimizing the choice between node selection and diversity approaches.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Networks - Volume 114, 26 February 2017, Pages 13-22
Journal: Computer Networks - Volume 114, 26 February 2017, Pages 13-22
نویسندگان
Leïla Gazzah, Leïla Najjar,