NDLI: Adaptive Multicast with Power and Rate Control Over Fading Channels in Mobile Wireless Networks

Content Provider	IEEE Xplore Digital Library
Author	Qinghe Du Xi Zhang
Copyright Year	2007
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Texas A & M Univ., College Station, TX (Qinghe Du; Xi Zhang)
Abstract	The paper proposed a power and rate adaptation scheme for multicastings in wireless networks by taking advantage of the broadcast nature of wireless channels. Specifically, the proposed scheme aims at achieving high system goodput by dynamically allocating the transmit power and data transmission rate jointly based on all multicast receiver's channel state information (CSI). Formulating the multicast goodput maximization problem to derive the rate and power adaptation policy, we observe that this goodput maximization is a non-concave optimization problem. By identifying the fact that the optimal power policy has the water-filling form, and introducing the concept of effective marginal goodput gain, the original goodput maximization was converted into an equivalent concave optimization problem, and then obtain its optimal solution. Also presented are the simulation analyses which show the performance improvement gained by our developed optimal power and rate adaptation policy.
Starting Page	3335
Ending Page	3340
File Size	361656
Page Count	6
File Format	PDF
ISBN	1424406587
ISSN	15253511
DOI	10.1109/WCNC.2007.614
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Programmable control Adaptive control Fading Wireless networks Broadcasting Resource management Physical layer Multicast algorithms Signal to noise ratio Communications Society
Content Type	Text
Resource Type	Article

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