利用数字补偿技术改进OFDM-WLAN接收机性能

Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI:10.1109/RAWCON.2002.1030130

W. Eberle, J. Tubbax, B. Come, S. Donnay, H. de Man, G. Gielen

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引用次数: 20

摘要

零中频接收器架构优于超外差解决方案，因为它们具有更好的集成能力和成本优势。然而，零中频接收机给系统设计者带来了一组模拟非理想性。其中，直流偏置、I/Q失配、相位噪声和有限动态范围是最具挑战性的。对于这些缺陷，我们提出了数字补偿技术，可以显着提高接收机性能或允许放松模拟前端规格。给出了符合IEEE 802.11a规范的接收机的仿真结果。

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OFDM-WLAN receiver performance improvement using digital compensation techniques

Zero-IF receiver architectures are preferred over superheterodyne solutions since their better integration capabilities result in cost advantages. However, zero-IF receivers present a set of analog non-idealities to the system designer. Among those, DC offsets, I/Q mismatch, phase noise, and limited dynamic range are the most challenging ones. For each or these imperfections, we propose digital compensation techniques that can either improve receiver performance considerably or allow a relaxation of the analog front-end specifications. Simulation results are presented for IEEE 802.11a-compliant receiver specifications.

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

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