Title
Multiuser Diversity OFDMA using Power Priority Selection and Adaptive Clipping
Abstract
In recent, orthogonal frequency division multiple access (OFDMA) has been used for a multiuser wireless communication. In a wireless network, the transmitted signal of each user has independent channel fluctuation characteristic. By using this characteristic, OFDMA can achieve the multiuser diversity (MUDiv). Until this time, to achieve a low complexity and performance improvement, the adaptive subcarrier block (ASB) and frequency symbol spreading (FSS) methods have been proposed. However, the system performance in a low Eb/N0 is worse than that of maximal sum capacity (MSC) and peak to average power ratio (PAPR) does not decrease greatly. To solve these problems, in this paper, we propose the subcarrier allocation with the power priority selection (PSS) and the adaptive clipping (AC) with the peak reduction signal to improve the system and PAPR performance.
Year
DOI
Venue
2014
10.4018/ijdst.2014100102
International Journal of Distributed Systems and Technologies
Keywords
Field
DocType
isi,replica signals,mimo-ofdm,scattered pilot,ici,mimo ofdm
MIMO-OFDM,Subcarrier,Wireless network,Wireless,Computer science,Orthogonal frequency-division multiple access,Communication channel,Real-time computing,Clipping (audio),Performance improvement
Journal
Volume
Issue
ISSN
5
4
1947-3532
Citations 
PageRank 
References 
1
0.35
17
Authors
4
Name
Order
Citations
PageRank
Akihiro Kuroha110.35
Chang-Jun Ahn210532.23
Tatsuya Omori3144.91
Ken-ya Hashimoto4197.86