Are SC-FDE Systems Robust to CFO?

被引：0
|
作者：
Chen, Ying [1 ]
Zhang, Jian [2 ]
Jayalath, A. D. S. [3 ]
机构：
[1] Univ South Australia, Inst Telecommun Res, Adelaide, SA 5095, Australia
[2] NICTA Australia, Canberra, ACT, Australia
[3] Queensland Univ Technol, Sch Engn Syst, Brisbane, Qld 4001, Australia
来源：
2010 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2010) | 2010年
基金：
澳大利亚研究理事会;
关键词：
OFDM SYSTEMS; FREQUENCY OFFSET; TRANSMISSIONS; SENSITIVITY;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper investigates the impact of carrier frequency offset (CFO) on Single Carrier wireless communication systems with Frequency Domain Equalization (SC-FDE). We show that CFO in SC-FDE systems causes irrecoverable channel estimation error, which leads to inter-symbol-interference (ISI). The impact of CFO on SC-FDE and OFDM is compared in the presence of CFO and channel estimation errors. Closed form expressions of signal to interference and noise ratio (SINR) are derived for both systems, and verified by simulation results. We find that when channel estimation errors are considered, SC-FDE is similarly or even more sensitive to CFO, compared to OFDM. In particular, in SC-FDE systems, CFO mainly deteriorates the system performance via degrading the channel estimation. Both analytical and simulation results highlight the importance of accurate CFO estimation in SC-FDE systems.
引用
收藏
页数：6
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