NDLI: A robust ranging detection with MAI cancellation for OFDMA systems

Content Provider	IEEE Xplore Digital Library
Author	Chieh-Lung Lin Szu-Lin Su
Copyright Year	2011
Description	Author affiliation: Institute of Computer and Communication Engineering, Department of Electrical Engineering, National Cheng Kung University, Tainan City, Taiwan, R.O.C (Chieh-Lung Lin; Szu-Lin Su)
Abstract	During the initial uplink synchronization, the BS communicates with MSs to adjust timing and power offsets. The common method to achieve the objective is to use the orthogonal code in the frequency domain for OFDMA systems. Due to the timing offset, the orthogonality of codes is decayed and multiple access interference (MAI) becomes serious. In order to decrease this influence, we proposed the idea which combines the channel estimation and the multiuser detection. On the strength of cancelling the MAI step by step, ranging users can be detected one by one. The proposed idea is robust to achieve a significant improvement on the ranging detection rate over the multipath Rayleigh fading channel.
Starting Page	937
Ending Page	941
File Size	192790
Page Count	5
File Format	PDF
ISBN	9781424488308
ISSN	17389445
e-ISBN	9788955191554
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-13
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Global IT Research Inst
Subject Keyword	Distance measurement Timing Estimation Correlation Equations Channel estimation Noise power estimation IEEE802.16e ranging OFDMA uplink multiuser ranging detection timing estimation
Content Type	Text
Resource Type	Article

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