NDLI: Optimal relaying strategy for UE relays

Content Provider	IEEE Xplore Digital Library
Author	Jingyu Kim Jung Ryul Yang Dong In Kim
Copyright Year	2011
Description	Author affiliation: School of Information and Communication Engineering, Sungkyunkwan University (SKKU), Suwon 440-746, Korea (Jingyu Kim; Jung Ryul Yang; Dong In Kim)
Abstract	In cooperative cellular wireless networks, a user equipment (UE) relay can be a good alternative to rendering an end user by forwarding the signal overheard from the source to the end user. However, due to its practical limitation, it has no cell-specific reference signal. Therefore, different from conventional fixed relay station, the channel state information (CSI) is not available to the UE relay. Since the UE relay cannot estimate relay-to-destination (R-D) channel capacity, there arises the possibility of an outage event in cooperating phase. In this paper, we introduce an outage based rate control under multiple relay networks in which there are one source, multiple UE relays and one end user. To achieve maximal overall transmission rate, resource allocation during the cooperating phase is done at the source in advance by considering both the expected transmission rate and the resulting outage probability. Especially we consider three cases of relaying strategies in such open-loop R-D links and observe that they complement each other depending on the R-D link geometry and channel conditions, leading to optimal relaying strategy for UE relays.
Starting Page	192
Ending Page	196
File Size	1197849
Page Count	5
File Format	PDF
ISBN	9781457703898
e-ISBN	9781457703904
DOI	10.1109/APCC.2011.6152803
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-02
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Signal to noise ratio Automatic repeat request Redundancy Wireless networks Broadcasting Decoding optimal relaying strategy UE relay outage based rate control open-loop transmission
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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