Abstract
The performance of optimum combining (OC) in amplify-and-forward (AF) relaying systems in the presence of co-channel interference (CCI) is analyzed using a tight approximation for the signal-to-interference-plus-noise ratio (SINR) at the destination. Two types of relaying protocols are studied, all-relay transmission with OC and best-relay transmission with OC. When CCI is present only at the destination, both relaying protocols achieve diversity gains up to M when interferer powers are scaled with the source and the relay powers, where M is the number of relays. Best-relay transmission with OC maximizes the spectral efficiency as each communication consumes only two time slots.
Original language | English |
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Article number | 7088579 |
Pages (from-to) | 2071-2080 |
Number of pages | 10 |
Journal | IEEE Transactions on Communications |
Volume | 63 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Jun 2015 |
Externally published | Yes |