Abstract
Due to multi-user diversity, the performance of a random unitary beamforming (RUB) can be improved upon in proportion to the number of users at the expense of an increase in feedback. It is essential to identify a mechanism to determine a set of orthonormal beams for improving the channel capacity. This paper proposes a unique scheme, named iterative best beam selection-based RUB (I-RUB), in which the base station selects the best beamforming vectors from unitary matrices generated by the proposed iterative algorithm. Using the selected beamforming vector at each stage, the beam set can ultimately be constructed for high sum-rate capacity of downlink, which leads to a reduction in feedback compared to those of other RUB schemes based on the beam set selection.
| Original language | English |
|---|---|
| Article number | 5706432 |
| Pages (from-to) | 968-974 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Communications |
| Volume | 59 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2011 Apr 1 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
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Iterative best beam selection for random unitary beamforming. / Son, Hyukmin; Lee, Sanghoon.
In: IEEE Transactions on Communications, Vol. 59, No. 4, 5706432, 01.04.2011, p. 968-974.Research output: Contribution to journal › Article
TY - JOUR
T1 - Iterative best beam selection for random unitary beamforming
AU - Son, Hyukmin
AU - Lee, Sanghoon
PY - 2011/4/1
Y1 - 2011/4/1
N2 - Due to multi-user diversity, the performance of a random unitary beamforming (RUB) can be improved upon in proportion to the number of users at the expense of an increase in feedback. It is essential to identify a mechanism to determine a set of orthonormal beams for improving the channel capacity. This paper proposes a unique scheme, named iterative best beam selection-based RUB (I-RUB), in which the base station selects the best beamforming vectors from unitary matrices generated by the proposed iterative algorithm. Using the selected beamforming vector at each stage, the beam set can ultimately be constructed for high sum-rate capacity of downlink, which leads to a reduction in feedback compared to those of other RUB schemes based on the beam set selection.
AB - Due to multi-user diversity, the performance of a random unitary beamforming (RUB) can be improved upon in proportion to the number of users at the expense of an increase in feedback. It is essential to identify a mechanism to determine a set of orthonormal beams for improving the channel capacity. This paper proposes a unique scheme, named iterative best beam selection-based RUB (I-RUB), in which the base station selects the best beamforming vectors from unitary matrices generated by the proposed iterative algorithm. Using the selected beamforming vector at each stage, the beam set can ultimately be constructed for high sum-rate capacity of downlink, which leads to a reduction in feedback compared to those of other RUB schemes based on the beam set selection.
UR - http://www.scopus.com/inward/record.url?scp=79955471573&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955471573&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2011.012711.100066
DO - 10.1109/TCOMM.2011.012711.100066
M3 - Article
AN - SCOPUS:79955471573
VL - 59
SP - 968
EP - 974
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
SN - 0096-1965
IS - 4
M1 - 5706432
ER -