Paper Info
Title
Uplink Channel Estimation for OFDMA System.
Abstract
This paper proposes uplink channel estimation schemes for OFDMA system. If frequency responses of assigned subcarriers between corresponding users and base station (BS) are put together into one frequency selective fading channel, time domain expression of the channel, in other words, overall channel impulse response has a significant property, namely, only about the same number of elements as the length of CP have nonzero values. Based on the analysis, we propose a least square channel estimation scheme and a simple remedy for conventional channel estimation scheme. Computer simulation results show that the proposed schemes can significantly improve BER performance.
Year
DOI
Venue
2007
10.1109/ICASSP.2007.366528
ICASSP
Keywords
Field
DocType
channel estimation,error statistics,fading channels,frequency division multiple access,least squares approximations,radio links,BER,OFDMA system,channel impulse response,frequency responses,frequency selective fading channel,least square channel estimation scheme,uplink channel estimation,OFDMA,channel estimation,cyclic prefix
Time domain,Base station,Mathematical optimization,Cyclic prefix,Fading,Computer science,Algorithm,Computer network,Communication channel,Frequency-division multiple access,Orthogonal frequency-division multiplexing,Bit error rate
Conference
Volume
ISSN
Citations 
3
1520-6149
8
PageRank 
References 
Authors
0.69
3
2
Name
Order
Citations
PageRank
Kazunori Hayashi123028.52
Hideaki Sakai226277.04