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Compensation Effect of Pre & Post Filter on Frequency Characteristics Distortion of Wideband Communication System

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3 Author(s)
Haiyan Zhao ; Grad. Sch. of Eng., Univ. of Fukui, Fukui ; Fujimoto, M. ; Hori, T.

High speed wireless communication system attracts much attention in recent years. To realize the high speed wireless communication system utilizing ultra-wide-frequency bands, a broadband antenna must be required. However, it is difficult to obtain the antenna which has uniform characteristics in broad frequency band. More over, propagation characteristics are also distorted in multi-path environment. Thus, the communication quality tends to become worse because of distortion of the frequency characteristics of the wideband communication system. This paper proposes the compensation method for the frequency characteristics distortion in wideband communication system using pre-filter and post-filter, under considering frequency characteristics of both transmitting and receiving antenna, in addition radio propagation characteristics. And effectiveness of an approximately inverse filter in case of severe distortion is verified through computer simulation.

Published in:

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Date of Conference:

11-14 Dec. 2007

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