Effects of channel estimation in adaptive loading gain of OFDM

被引：0

作者：

Li, Y ^{[1
]}

Su, GC ^{[1
]}

机构：

[1] Beijing Inst Technol, Dept Elect Engn, Beijing 100081, Peoples R China

来源：

2004 3RD INTERNATIONAL CONFERENCE ON COMPUTATIONAL ELECTROMAGNETICS AND ITS APPLICATIONS, PROCEEDINGS | 2004年

关键词：

OFDM; coherence bandwidth; adaptive loading; power-allocation; channel estimation;

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：

Orthogonal Frequency Division Multiplexing (OFDM) modulation scheme is adopted by more and more wireless communication systems to help achieve reliable and high-rate data transmission Wideband wireless system based on OFDM are limited in their performance by the dips in the frequency spectrum of the multipath fading channel.Channel estimation is not only useful for demodulation of the transmitted data but also for implemention of loading scheme for the transmitter,since the performance of OFDM-based system can be augmented by the adaptive loading and power-allocation of the subcarriers. We simulated two kinds of channel estimation schemes and an adaptive loading algorithms, compared the effects of the channel estimation for loading gain. Simulation shows that the loading gain of adaptive algorithm can be improved ulteriorly through better channel estimation.

引用

页码：296 / 299

页数：4

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