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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ping Chung Ng Soung Chang Liew Li Bin Jiang |
| Copyright Year | 2005 |
| Description | Author affiliation: Dept. of Inf. Eng., City Univ. of Hong Kong, China (Ping Chung Ng; Soung Chang Liew; Li Bin Jiang) |
| Abstract | In large-scale wireless networks, interference among nodes limits channel spatial re-use and is a main hurdle for scalable performance. There are two types of interference: (1) physical interference due to the receiver's inability to decode a signal when the power received from other signals is large; (2) protocol interference imposed by the specific multi-access protocol being used. The paper models both interference types in terms of a set of inequality constraints for the IEEE 802.11 CSMA/CA protocol. Based on the inequalities, we investigate the impact of some parameters (basic-rate, data-rate, and physical-preamble-rate) on channel spatial re-use. Regardless of the parameter settings, the total capacity in an 802.11 network reaches a ceiling as the number of nodes, n, increases. We identify the fundamental causes for the non-scalable performance, and show that 802.11 can be made to be scalable with a simple modification, achieving O(n) throughput without adaptive power control. We believe that this is the first paper to demonstrate this. |
| Starting Page | 69 |
| Ending Page | 74 |
| File Size | 2048552 |
| Page Count | 6 |
| File Format | |
| ISBN | 0780389662 |
| ISSN | 15253511 |
| DOI | 10.1109/WCNC.2005.1424478 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-03-13 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Large-scale systems Wireless networks Protocols Decoding Interference constraints Multiaccess communication Throughput Programmable control Adaptive control Power control |
| Content Type | Text |
| Resource Type | Article |
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