Subblock Processing for Frequency-domain Turbo Equalization Under Fast Fading Environments

被引：0
|
作者：
Kambara, K. [1 ]
Nishimoto, H. [1 ]
Nishimura, T. [1 ]
Ohgane, T. [1 ]
Ogawa, Y. [1 ]
机构：
[1] Hokkaido Univ, Grad Sch Informat Sci & Technol, Sapporo, Hokkaido 0600814, Japan
来源：
68TH IEEE VEHICULAR TECHNOLOGY CONFERENCE, FALL 2008 | 2008年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Frequency-domain equalization (FDE) has been studied for suppressing inter-symbol interference (ISI) due to frequency selective fading in single carrier systems. When a high-mobility terminal is assumed in the system, channel transition within an FFT block cannot be ignored. Then, the ISI reduction performance of FDE degrades since cyclicity of the channel matrix is lost. To solve this problem, a method of dividing the received data block into multiple subblocks has been proposed. In the paper, the subblock processing is applied to frequency-domain turbo equalization (FDTE). The results of numerical analysis show a remarkable improvement by the proposed method. Specifically, the FDTE with two-subblock processing can decrease the block error rate floor to less than 0.001 when the maximum Doppler frequency normalized by the block length is 0.4.
引用
收藏
页码：839 / 843
页数：5
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