Relay selection with outdated channel state information in cooperative communication systems

2013 ◽  
Vol 7 (14) ◽  
pp. 1557-1565 ◽  
Author(s):  
Li Fei ◽  
Qifeng Xu ◽  
Jun Zhang ◽  
Qiang Gao
Keyword(s):  
Channel State Information ◽  
Cooperative Communication ◽  
Communication Systems ◽  
Relay Selection ◽  
Channel State ◽  
State Information ◽  
Outdated Channel State Information

scholarly journals On the performance of energy harvesting AF partial relay selection with TAS and outdated channel state information over identical channels

2020 ◽  
Vol 10 (5) ◽  
pp. 5296
Author(s):  
Kehinde O. Odeyemi ◽  
Pius A. Owolawi
Keyword(s):  
Energy Harvesting ◽  
Closed Form ◽  
Channel State Information ◽  
Relay Selection ◽  
Cumulative Distribution ◽  
Closed Form Expression ◽  
Channel State ◽  
State Information ◽  
Partial Relay Selection ◽  
Outdated Channel State Information

Energy scarcity has been known to be one of the most noticeable challenges in wireless communication system. In this paper, the performance of an energy harvesting based partial relay selection (PRS) cooperative system with transmit antenna selection (TAS) and outdated channel state information (CSI) is investigated. The system dual-hops links are assumed to follow Rayleigh distribution and the relay selection is based on outdated CSI of the first link. To realize the benefit of multiple antenna, the amplified-and-forward (AF) relay nodes then employs the TAS technique for signal transmission and signal reception is achieved at the destination through maximum ratio combining (MRC) scheme. Thus, the closed-form expression for the system equivalent end-to-end cumulative distribution function (CDF) is derived. Based on this, the analytical closed-form expressions for the outage probability, average bit error rate, and throughput for the delay-limited transmission mode are then obtained. The results illustrated that the energy harvesting time, relay distance, channel correlation coefficient, the number of relay transmit antennas and destination received antenna have significant effect on the system performance. Monte-carol simulation is employed to validate the accuracy of the derived expressions.

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