Abstract
In this paper we propose new algorithms to determine the antenna location for downlink distributed antenna systems (DAS) with selection transmission (ST). ST has some advantages for DAS since the feedback overhead is quite small and other-cell interference can be reduced compared to other transmission schemes. For the single-cell case, we consider a circular antenna layout with or without a center antenna and divide a cell into regions with the same physical area. Then, we formulate the optimization problem of distributed antenna (DA) port locations which maximizes the lower bound of the expected signal to noise ratio in each region. Also, for the two-cell DAS, we maximize the lower bound of the expected signal to leakage ratio to identify the optimum da positions. In order to solve the problem, we propose an iterative method by deriving the gradient of the cost function for a gradient ascent algorithm. The da locations obtained from our proposed method are compared with conventional solutions. Simulation results show that the proposed algorithms offer a large capacity gain over the centralized antenna systems in single-cell and two-cell environments.
| Original language | English |
|---|---|
| Title of host publication | IEEE Vehicular Technology Conference |
| DOIs | |
| Publication status | Published - 2011 Aug 29 |
| Event | 2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Budapest, Hungary Duration: 2011 May 15 → 2011 May 18 |
Other
| Other | 2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring |
|---|---|
| Country | Hungary |
| City | Budapest |
| Period | 11/5/15 → 11/5/18 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Science Applications
- Applied Mathematics
Cite this
Antenna placement for downlink distributed antenna systems with selection transmission. / Park, Eunsung; Lee, Inkyu.
IEEE Vehicular Technology Conference. 2011. 5956477.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Antenna placement for downlink distributed antenna systems with selection transmission
AU - Park, Eunsung
AU - Lee, Inkyu
PY - 2011/8/29
Y1 - 2011/8/29
N2 - In this paper we propose new algorithms to determine the antenna location for downlink distributed antenna systems (DAS) with selection transmission (ST). ST has some advantages for DAS since the feedback overhead is quite small and other-cell interference can be reduced compared to other transmission schemes. For the single-cell case, we consider a circular antenna layout with or without a center antenna and divide a cell into regions with the same physical area. Then, we formulate the optimization problem of distributed antenna (DA) port locations which maximizes the lower bound of the expected signal to noise ratio in each region. Also, for the two-cell DAS, we maximize the lower bound of the expected signal to leakage ratio to identify the optimum da positions. In order to solve the problem, we propose an iterative method by deriving the gradient of the cost function for a gradient ascent algorithm. The da locations obtained from our proposed method are compared with conventional solutions. Simulation results show that the proposed algorithms offer a large capacity gain over the centralized antenna systems in single-cell and two-cell environments.
AB - In this paper we propose new algorithms to determine the antenna location for downlink distributed antenna systems (DAS) with selection transmission (ST). ST has some advantages for DAS since the feedback overhead is quite small and other-cell interference can be reduced compared to other transmission schemes. For the single-cell case, we consider a circular antenna layout with or without a center antenna and divide a cell into regions with the same physical area. Then, we formulate the optimization problem of distributed antenna (DA) port locations which maximizes the lower bound of the expected signal to noise ratio in each region. Also, for the two-cell DAS, we maximize the lower bound of the expected signal to leakage ratio to identify the optimum da positions. In order to solve the problem, we propose an iterative method by deriving the gradient of the cost function for a gradient ascent algorithm. The da locations obtained from our proposed method are compared with conventional solutions. Simulation results show that the proposed algorithms offer a large capacity gain over the centralized antenna systems in single-cell and two-cell environments.
UR - http://www.scopus.com/inward/record.url?scp=80052010579&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052010579&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2011.5956477
DO - 10.1109/VETECS.2011.5956477
M3 - Conference contribution
AN - SCOPUS:80052010579
SN - 9781424483310
BT - IEEE Vehicular Technology Conference
ER -