无线局域网模拟外差架构中的自适应预均衡

Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI:10.1109/RAWCON.2002.1030129

E. Coersmeier, E. Zielinski

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引用次数: 4

摘要

IEEE802.11a无线局域网标准定义了高系统性能，因此要求OFDM发射机输出具有一定的信号精度。考虑到潜在的模拟低、中IF和RF滤波器缺陷，有必要在传输前对信号流进行数字预均衡。本文重点介绍了OFDM发射机前端结构和数字域自适应决策辅助预均衡。预均衡过程的数学推导自众所周知的后均衡各自的信道均衡情况。最后给出了仿真结果。

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Adaptive pre-equalization in analog heterodyne architectures for wireless LAN

The IEEE802.11a wireless LAN standard defines a high system performance and therefore requires a certain signal accuracy for the OFDM transmitter output. Taking the potential analog low, medium IF and RF filter imperfections into account, it is necessary to pre-equalize the signal stream digitally before transmitting. The paper concentrates on the description of the OFDM transmitter front-end architecture and the adaptive decision-aided pre-equalization in the digital domain. The mathematics of the pre-equalization process are derived from the well known post-equalization respective channel-equalization case. Finally simulation results are presented.

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Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)

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