Mobile Location Estimation in CDMA Cellular Networks by Using Fuzzy Logic
نویسندگان
چکیده
An adaptive fuzzy logic estimator for locating mobiles in a direct sequence code division multiple access (DS/CDMA) cellular system is proposed. The location estimation is based on the measured pilot signal strengths by the mobile station (MS) from a number of nearby base stations (BSs). A smoother, which uses past and current output data from the fuzzy estimator to produce a more accurate estimate, is used to improve the accuracy of the location estimation. Numerical performance results under various path loss and channel shadowing conditions are presented to demonstrate the viability of the proposed fuzzy estimator.
منابع مشابه
Intuitionistic fuzzy logic for adaptive energy efficient routing in mobile ad-hoc networks
In recent years, mobile ad-hoc networks have been used widely due to advances in wireless technology. These networks are formed in any environment that is needed without a fixed infrastructure or centralized management. Mobile ad-hoc networks have some characteristics and advantages such as wireless medium access, multi-hop routing, low cost development, dynamic topology and etc. In these netwo...
متن کاملTrajectory Tracking of a Mobile Robot Using Fuzzy Logic Tuned by Genetic Algorithm (TECHNICAL NOTE)
In recent years, soft computing methods, like fuzzy logic and neural networks have been presented and developed for the purpose of mobile robot trajectory tracking. In this paper we will present a fuzzy approach to the problem of mobile robot path tracking for the CEDRA rescue robot with a complicated kinematical model. After designing the fuzzy tracking controller, the membership functions an...
متن کاملA Comparison of Multiple Algorithms for Fingerprinting using IEEE802.11
The effectiveness of Location Based Systems depends on the correct location of users and mobile devices. While the outdoor location can be easily calculated, using technologies such as GPS (Global Positioning System), it is more difficult to obtain when the location scenario is an indoor environment. Several technologies and location techniques can be used in this field. One of these techniques...
متن کاملLocalization of Indoor Areas Using Wi-Fi Signals, Type-2 Fuzzy Inference Systems and Data Mining
Recent advances in communication and Wi-Fi mobile technology has led the Wireless Local Area Network to become more ubiquitous. These networks provide a potential infrastructure that enables the indoor location estimate for users who wear wireless devices such as smartphones. This infrastructure goes beyond GPS (Global Position System) where signal is weak or is not available in indoors. This p...
متن کاملGenetic-Algorithms-Based Fuzzy Call Admission Control for CDMA Cellular Systems
Wireless personal communication systems grow very fast, and the Code Division Multiple Access (CDMA) system has become the key technology for multiple accesses in the third generation communication systems. Unlike conventional FDMA and TDMA systems, the capacity of CDMA is limited by the interference. Moreover, the quality of the wireless communications varies with the terrain and the location,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Wireless Personal Communications
دوره 22 شماره
صفحات -
تاریخ انتشار 2002