NDLI: An improved multicarrier differential CDMA system with synchronization errors in HF channels

Content Provider	IEEE Xplore Digital Library
Author	Leizhen Zhou Minjian Zhao Jie Zhong Yunlong Cai
Copyright Year	2011
Description	Author affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China (Leizhen Zhou; Minjian Zhao; Jie Zhong; Yunlong Cai)
Abstract	Under the time variant and fading HF channel, an improved Multicarrier CDMA System using Frequent Domain Differential Detection (MC-FDDD-CDMA) for low SNR links is proposed. With synchronization errors, including frequent offset and timing offset, we analyze the system BER performance under the fast fading HF channel, where the adjacent subcarriers have different channel responses. The results show that the synchronization errors reduce the desired signal amplitude, and introduce ICI. In addition, a Common Phase Error is generated by differential detection, which causes the rotation of signal constellation and limits the system BER performance. Therefore, we exploit a novel phase estimation method applicable to the MC-FDDD-CDMA system. Finally, computer simulations prove that the improved system can effectively reduce the CPE and considerably promote the BER performance under the low SNR HF channels.
Starting Page	1
Ending Page	5
File Size	362050
Page Count	5
File Format	PDF
ISBN	9781457701009
e-ISBN	9781457701016
DOI	10.1109/ChinaCom.2011.6158109
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Multicarrier CDMA OFDM Bit error rate Synchronization low SNR synchronization errors BER performance Differential Detection CPE HF Signal to noise ratio Demodulation
Content Type	Text
Resource Type	Article

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