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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ulukan, E. Gurbuz, O. |
| Copyright Year | 2005 |
| Description | Author affiliation: Fac. of Eng. & Natural Sci., Sabanci Univ., Istanbul, Turkey (Ulukan, E.; Gurbuz, O.) |
| Abstract | Smart antenna systems not only enable users to have high quality links but also increase network throughput by allowing spatial reuse of wireless channels by the use of directional transmission. The performance of smart antenna systems is limited because of the increased hidden terminal problem and deafness of nodes. We have proposed angular MAC (ANMAC) protocol that avoids both problems through medium access tables in the nodes that keep track of the locations of the destination nodes as well as all communicating neighbors. With this feature, angular CSMA and space division multiple access (SDMA) are achieved. In this paper, we present detailed performance analysis of ANMAC considering different topologies and traffic scenarios, and we show that SDMA cannot be fully exploited without a smart scheduler. We propose ANMAC with location based scheduling (ANMAC-LS) and compare its performance with other smart antenna approaches and omni 802.11 MAC. We prove the efficiency of location based scheduling in wireless networks with smart antennas, and we also show the effects of antenna orientation on throughput, using realistic antenna patterns and ANMAC protocol. |
| Starting Page | 1473 |
| Ending Page | 1478 |
| File Size | 249702 |
| Page Count | 6 |
| File Format | |
| ISBN | 0780388879 |
| ISSN | 15502252 |
| DOI | 10.1109/VETECS.2005.1543564 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-05-30 |
| Publisher Place | Sweden |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Media Access Protocol Wireless application protocol Mobile ad hoc networks Multiaccess communication Throughput Directive antennas Transmitting antennas Deafness Access protocols Performance analysis Wireless LANs smart antenna directional scheduling 802.11 |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering Computer Science Applications |
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