Abstract
In this paper, an energy harvesting dual-hop relaying system without/with the presence of co-channel interference (CCI) is investigated. Specifically, the energy constrained multi-antenna relay node is powered by either the information signal of the source or via the signal receiving from both the source and interferer. In particular, we first study the outage probability and ergodic capacity of an interference free system, and then extend the analysis to an interfering environment. To exploit the benefit of multiple antennas, three different linear processing schemes are investigated, namely, 1) Maximum ratio combining/maximum ratio transmission (MRC/MRT), 2) Zero-forcing/MRT (ZF/MRT) and 3) Minimum mean-square error/MRT (MMSE/MRT). For all schemes, both the systems outage probability and ergodic capacity are studied, and the achievable diversity order is also presented. In addition, the optimal power splitting ratio minimizing the outage probability is characterized. Our results show that the implementation of multiple antennas increases the energy harvesting capability, hence, significantly improves the systems performance. Moreover, it is demonstrated that the CCI could be potentially exploited to substantially boost the performance, while the choice of a linear processing scheme plays a critical role in determining how much gain could be extracted from the CCI.
| Original language | English |
|---|---|
| Article number | 7029680 |
| Pages (from-to) | 1400-1418 |
| Number of pages | 19 |
| Journal | IEEE Transactions on Communications |
| Volume | 63 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 1 2015 |
| Externally published | Yes |
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Keywords
- co-channel interference
- Dual-hop relay channel
- linear multiple-antenna processing
- performance analysis
- wireless power transfer
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Wireless information and power transfer in relay systems with multiple antennas and interference. / Zhu, Guangxu; Zhong, Caijun; Suraweera, Himal A.; Karagiannidis, George K.; Zhang, Zhaoyang; Tsiftsis, Theodoros A.
In: IEEE Transactions on Communications, Vol. 63, No. 4, 7029680, 01.04.2015, p. 1400-1418.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Wireless information and power transfer in relay systems with multiple antennas and interference
AU - Zhu, Guangxu
AU - Zhong, Caijun
AU - Suraweera, Himal A.
AU - Karagiannidis, George K.
AU - Zhang, Zhaoyang
AU - Tsiftsis, Theodoros A.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - In this paper, an energy harvesting dual-hop relaying system without/with the presence of co-channel interference (CCI) is investigated. Specifically, the energy constrained multi-antenna relay node is powered by either the information signal of the source or via the signal receiving from both the source and interferer. In particular, we first study the outage probability and ergodic capacity of an interference free system, and then extend the analysis to an interfering environment. To exploit the benefit of multiple antennas, three different linear processing schemes are investigated, namely, 1) Maximum ratio combining/maximum ratio transmission (MRC/MRT), 2) Zero-forcing/MRT (ZF/MRT) and 3) Minimum mean-square error/MRT (MMSE/MRT). For all schemes, both the systems outage probability and ergodic capacity are studied, and the achievable diversity order is also presented. In addition, the optimal power splitting ratio minimizing the outage probability is characterized. Our results show that the implementation of multiple antennas increases the energy harvesting capability, hence, significantly improves the systems performance. Moreover, it is demonstrated that the CCI could be potentially exploited to substantially boost the performance, while the choice of a linear processing scheme plays a critical role in determining how much gain could be extracted from the CCI.
AB - In this paper, an energy harvesting dual-hop relaying system without/with the presence of co-channel interference (CCI) is investigated. Specifically, the energy constrained multi-antenna relay node is powered by either the information signal of the source or via the signal receiving from both the source and interferer. In particular, we first study the outage probability and ergodic capacity of an interference free system, and then extend the analysis to an interfering environment. To exploit the benefit of multiple antennas, three different linear processing schemes are investigated, namely, 1) Maximum ratio combining/maximum ratio transmission (MRC/MRT), 2) Zero-forcing/MRT (ZF/MRT) and 3) Minimum mean-square error/MRT (MMSE/MRT). For all schemes, both the systems outage probability and ergodic capacity are studied, and the achievable diversity order is also presented. In addition, the optimal power splitting ratio minimizing the outage probability is characterized. Our results show that the implementation of multiple antennas increases the energy harvesting capability, hence, significantly improves the systems performance. Moreover, it is demonstrated that the CCI could be potentially exploited to substantially boost the performance, while the choice of a linear processing scheme plays a critical role in determining how much gain could be extracted from the CCI.
KW - co-channel interference
KW - Dual-hop relay channel
KW - linear multiple-antenna processing
KW - performance analysis
KW - wireless power transfer
UR - http://www.scopus.com/inward/record.url?scp=84928319785&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928319785&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2015.2398862
DO - 10.1109/TCOMM.2015.2398862
M3 - Article
VL - 63
SP - 1400
EP - 1418
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
SN - 0096-1965
IS - 4
M1 - 7029680
ER -