%0 Journal Article
%T Two linear intercarrier interference cancellation techniques in ofdm systems over multipath channels<br>多径信道下OFDM系统中的两种线性载波间干扰抑制技术
%A Wang Yi
%A Zhang Zhongpei
%A Zhao Ming
%A Zhou Shidong
%A Xu Xibin
%A <br>王艺
%A 张忠培
%A 赵明
%A 周世东
%A 许希斌
%J 电子与信息学报
%D 2003
%I 
%X InterCarrier Interference (ICI) is an important factor degrading the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems. Two linear ICI cancellation techniques, Frequency RAKE (F-RAKE) and frequency equalization (F-FIR), with different length of delay-line, L, are studied in this paper. Assuming that the channel information is known in the receiver and MMSE criterion is adopted for F-FIR, results show that F-RAKE has about 2-5dB Carrier-Interference-Ratio (CIR) achievement than standard receiver in case of L=3. Meanwhile, F-FIR has about 2-7 dB CIR achievement. And the CIR performance gains of the two schemes decrease with increment of L. Also, the computational complexity of F-FIR is L times than that of F-RAKE. Thus, the tradeoff between complexity and performance in the engineering can be reached by selecting the length of delay-line and receiver scheme.
%K Frequency RAKE
%K Frequency equalization
%K Orthogonal frequency division multiplexing
%K Intercarrier interference<br>载波间干扰
%K OFDM
%K 频域均衡
%K 正交频分复用
%K 频域RAKE
%K 信道
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=9395D44D5D4220EF&yid=D43C4A19B2EE3C0A&vid=C5154311167311FE&iid=E158A972A605785F&sid=DDEED1BDDBFAA8A7&eid=BEE722AB5028E81F&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=3&reference_num=6