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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chen-Mou Cheng Kung, H.T. |
| Copyright Year | 2004 |
| Description | Author affiliation: Div. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA, USA (Chen-Mou Cheng; Kung, H.T.) |
| Abstract | We describe a simple physical-layer relay scheme for wireless communication in which a set of low-noise linear amplify-and-forward relays are placed between transmitter and receiver to assist radio communication. By exploiting the geometric gain resulting from the location of properly deployed relays, part of the radio transmission power of the information source can be off-loaded to these relays. We argue that such a simple relay scheme can thus provide a transparent and management-free alleviation to the problem of limited battery time in application scenarios like sensor networks, where radio transmission can consume a significant portion of the battery-provided energy. We use simulation to quantify the bit error rate (BER) performance of the relay scheme in a low signal-to-noise ratio (SNR) regime when used in conjunction with the maximal ratio combining (MRC) scheme and Alamouti space-time codes. We show that, under a reasonably precise indoor radio propagation model derived from measurements, the proposed relay scheme is capable of reaping the geometric gain attained from a set of relays deployed midway between the transmitter and the receiver to extend effectively the battery lifetime of the network. |
| Starting Page | 4655 |
| Ending Page | 4659 |
| File Size | 1920648 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780385217 |
| ISSN | 10903038 |
| DOI | 10.1109/VETECF.2004.1404973 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-09-26 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Relays Radio transmitters Receivers Bit error rate Wireless communication Radio communication Battery management systems Energy management Radio spectrum management Signal to noise ratio |
| Content Type | Text |
| Resource Type | Article |
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