In this paper, we investigate the impact of outdated channel state information (CSI) on the capacity of an opportunistic relaying system. We derive the analytical expressions of the channel capacity and its associated outage probability of reactive relay selection for four adaptive transmission techniques. Analytical and numerical results show that the rate adaptation policy achieves better performance compared to the sub-optimal channel inversion in the presence of outdated CSI. In addition, design insights and useful observations for relay selection can be deduced from these results, implying that CSI accuracy in the source-relay link plays a significant role in determining the relay selection strategy for given system parameters.
|Title of host publication||2015 IEEE International Conference on Communications, ICC 2015|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|Publication status||Published - 2015 Sep 9|
|Event||IEEE International Conference on Communications, ICC 2015 - London, United Kingdom|
Duration: 2015 Jun 8 → 2015 Jun 12
|Name||IEEE International Conference on Communications|
|Other||IEEE International Conference on Communications, ICC 2015|
|Period||15/6/8 → 15/6/12|
Bibliographical notePublisher Copyright:
© 2015 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering