DocumentCode
472986
Title
History-Based Adaptive Modulation for a Downlink Multicast Channel in OFDMA Systems
Author
Wang, Haibo ; Schwefel, Hans Peter ; Toftegaard, Thomas Skjodeberg
Author_Institution
Aalborg Univ., Aalborg
fYear
2008
fDate
March 31 2008-April 3 2008
Firstpage
1588
Lastpage
1592
Abstract
In this paper we investigated the adaptive modulation strategies for Multicast service in orthogonal frequency division multiple access systems. We defined a Reward function as the performance optimization target and developed adaptive modulation strategies to maximize this Reward function. The proposed optimization algorithm varied the instantaneous BER constraint of each mobile Multicast receiver according to its individual cumulated BER, which resulted in a significant Reward gain.
Keywords
OFDM modulation; adaptive modulation; frequency division multiple access; multicast communication; OFDMA systems; downlink multicast channel; history-based adaptive modulation; instantaneous BER constraint; mobile multicast receiver; multicast service; orthogonal frequency division multiple access systems; reward function; Bandwidth; Base stations; Bit error rate; Communications Society; Downlink; Fading; Frequency conversion; OFDM modulation; Optimization; Receivers;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE
Conference_Location
Las Vegas, NV
ISSN
1525-3511
Print_ISBN
978-1-4244-1997-5
Type
conf
DOI
10.1109/WCNC.2008.284
Filename
4489315
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