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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Qinliang Su Aiping Huang Zhaoyang Zhang Kai Xu Jin Yang |
| Copyright Year | 2010 |
| Description | Author affiliation: Institute of Information and Communication Engineering, Zhejiang University Hangzhou 310027, China (Qinliang Su; Aiping Huang; Zhaoyang Zhang) || China Broadband Communication Research Lab, Applied Research Center, Motorola (Kai Xu; Jin Yang) |
| Abstract | A macrocell superposed by indoor deployed femto-cells forms a geography-overlapped and spectrum-shared two-tier network, which can efficiently improve coverage and enhance system capacity. To reduce inter-tier co-channel interference, femtocell user should choose suitable access channel according to the path losses between itself and the macrocell users. Path loss should be estimated non-cooperatively since information exchange is difficult between macrocell and femtocells. In this paper, a novel method is proposed for femtocell user to estimate the path loss between itself and any macrocell user independently. According to the adaptive modulation and coding (AMC) mode information broadcasted by the macrocell base station (BS), femtocell user first estimates the path loss between BS and a macrocell user by using Maximum a Posteriori (MAP) method. The probability density function (PDF) and statistics of the transmission power of the macrocell user are then derived. According to the sequence of received power values from the macrocell user, femtocell user estimates the path loss between itself and the macrocell user by using minimum mean square error (MMSE) method. Simulation results show that the proposed method can efficiently estimate the path loss between any femtocell user and any macrocell user in various kinds of conditions. |
| Starting Page | 684 |
| Ending Page | 689 |
| File Size | 303922 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424488636 |
| e-ISBN | 9781424488650 |
| DOI | 10.1109/GLOCOMW.2010.5700408 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-12-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Macrocell networks Estimation path loss estimation Interference channel selection Downlink Equations cognitive radio Propagation losses Femtocell Mathematical model two-tier network spectrum sharing |
| Content Type | Text |
| Resource Type | Article |
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