Opportunistic Network-Coded Cooperative Transmission with Demodulate-and-Forward Protocol in Wireless Channels
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SCOPUS
- Title
- Opportunistic Network-Coded Cooperative Transmission with Demodulate-and-Forward Protocol in Wireless Channels
- Authors
- Yune, TW; Kim, D; Im, GH
- Date Issued
- 2011-07
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Abstract
- In this letter, we consider a multiuser cooperative transmission scheme with network coding over wireless channels. Network coding based on decode-and-forward protocol is a promising technique to improve network throughput. However, decoding errors at the relay cause error propagation, which degrades the performance of network-coded cooperations. To mitigate the error propagation in the network-coded signal, we first express a single equivalent gain, and then the opportunistic relay selection and proportional combining schemes are performed with the equivalent channel and the relay-destination channel. Simulation results show that all cooperative users can obtain a diversity gain of order two by using single network-coded transmission, even when there are detection errors at the relay.
- Keywords
- Cooperative diversity; demodulate-and-forward (DMF); multi-node wireless relay networks; network coding; relay selection; SINGLE-CARRIER TRANSMISSION; DIVERSITY; PERFORMANCE; EQUALIZATION; MODULATION; SYSTEMS; RELAYS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17131
- DOI
- 10.1109/TCOMM.2011.050911.090660
- ISSN
- 0090-6778
- Article Type
- Article
- Citation
- IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 59, no. 7, page. 1791 - 1795, 2011-07
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