109 0

On the asymptotic sum-rate in 2xNx2 dual-hop relaying with quality based channel reporting and relay selection

Title
On the asymptotic sum-rate in 2xNx2 dual-hop relaying with quality based channel reporting and relay selection
Author
김동우
Issue Date
2007-09
Publisher
IEEE
Citation
2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, Page. 2508-2512
Abstract
In this paper, we prove the asymptotic sum-rate growth like 2 log log N can be achieved in 2 × N × 2 dual-hop relaying systems with 2 transmit antennas at a base station (or a source), N ≥ 2 single receive/transmit antenna relays and 2 destination users with a single antenna. The capacity is achieved when the base station transmits with zero-forcing beamforming and the relays that actively transmit are selected with semi-orthogonal relay selection principle. Since the base station should know the channel information to the relays, the feedback load grows prohibitively large if N → ∞. To reduce the feedback load from the relays to the base station, we use quality-based channel state reporting (QBR). Numerical results show that the sum-rate achieved by N relays gets close to its multiuser counterpart if the amplifying gain at the relay is large. We also show how QBR is effective in reducing the feedback load when N is large.
URI
https://ieeexplore.ieee.org/document/4394625https://repository.hanyang.ac.kr/handle/20.500.11754/106962
ISBN
978-1-4244-1143-6
ISSN
2166-9570; 2166-9589
DOI
10.1109/PIMRC.2007.4394625
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE