NDLI: On the Finite-User Stability Region of Slotted ALOHA with Cooperative Users

Content Provider	IEEE Xplore Digital Library
Author	Chun-Kuang Lin Hong, Y.-W.P.
Copyright Year	2008
Description	Author affiliation: Inst. of Commun. Eng. Nat., Tsing Hua Univ., Hsinchu (Chun-Kuang Lin; Hong, Y.-W.P.)
Abstract	In this work, we study the finite-user stability region of a slotted ALOHA random access network with cooperative users. The network consists of multiple cooperating pairs where the users in each pair is allowed to cooperate by relaying each others' messages to the access point (AP). Spatial diversity gains are achieved since the packet of a cooperative user can be transmitted through independent fading channels, eg. the direct transmission path and the cooperative relaying path. Most works in the literature on cooperative communications focus on the physical layer aspects such as coding, modulation, transceiver signal processing etc. In this paper, we study the advantages of user cooperation from a MAC layer perspective and devise queueing strategies to exploit the cooperative diversity gains in a random access network. Extending upon our previous results for the two-user case, we study the stability of the finite-user cooperative system that consists of multiple cooperating pairs. By treating each cooperative pair as a transmission entity, we derive inner bounds for the finite-user stability region and propose a ranking system to characterize the transmission entities' relative tendency of being stable (or unstable).
Starting Page	1082
Ending Page	1086
File Size	151759
Page Count	5
File Format	PDF
ISBN	9781424420759
DOI	10.1109/ICC.2008.211
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stability Relays Diversity methods Fading Physical layer Modulation coding Signal processing Cooperative systems Access protocols Communications Society
Content Type	Text
Resource Type	Article

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