Abstract
Over the last five years, relaying or multihop techniques have been intensively researched as means for potentially improving link performance of wireless networks. However, the data rates of relays are often limited because they cannot transmit and receive on the same frequency simultaneously. This limitation has come to the attention of researchers, and recently a number of relay techniques have been proposed specifically to improve the data efficiency of relaying protocols. This paper surveys transmission protocols that employ first single relays, then multiple relays and finally multiple antenna relays. A common feature of these techniques is that novel signal processing techniques are required in the relay network to support increased data rates. This paper presents results and discussion that highlight the advantages of these approaches.
Original language | English (US) |
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Pages (from-to) | 196-206 |
Number of pages | 11 |
Journal | Journal of Communications and Networks |
Volume | 11 |
Issue number | 2 |
DOIs | |
State | Published - Apr 2009 |
All Science Journal Classification (ASJC) codes
- Information Systems
- Computer Networks and Communications
Keywords
- Cooperative communications
- Diversity-multiplexing tradeoff
- Multiple input multiple output (MIMO)
- Multiplexing gain
- Relaying
- Signal processing techniques
- Transmission protocols