An adaptive block pilot scheme for OFDM systems

被引：0
|
作者：
Wang, Jin-Kuan [1 ]
Han, Peng [1 ]
Xu, Peng [1 ]
Han, Ying-Hua [1 ]
机构：
[1] School of Information Science and Engineering, Northeastern University, Shenyang 110819, China
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2011年 / 32卷 / 05期
关键词：
Channel estimation - Modulation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The inset method, modulation technique and transmit channel of block pilot signal was researched in order to improving the low channel using efficiency which brought by fixation of inset pilot density in traditional OFDM. Therefore an adaptive block pilot scheme with low complexity was proposed in response to a traditional OFDM system with fixed pilot having a lack of channel utilization. It is designed to react to environmental conditions and reduces the overall pilot overhead when ideal performance is guaranteed. Furthermore, placement of pilot signals and signaling to facilitate this adaptive operation were also addressed. Simulation results showed that the proposed scheme remarkably improves system performance with low pilot overhead compared to conventional schemes.
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页码：642 / 645
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