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Low-power hybrid structure of digital matched filters for direct sequence spread spectrum systems

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2 Author(s)
Sung-Won Lee ; Dept. of Electr. Eng. & Comput. Sci., KAIST, Daejeon, South Korea ; In-Cheol Park

This paper presents a low-power structure of digital matched filters (DMFs), which is proposed for direct sequence spread spectrum systems. Traditionally, low-power approaches for DMFs are based on either the transposed-form structure or the direct-form one. A new hybrid structure that employs the direct-form structure for local addition and the transposed-form structure for global addition is used to take advantages of both structures. For a 128-tap DMF, the proposed DMF that processes 32 addends a cycle consumes 46 % less power at the expense of 6 % area overhead as compared to the state-of-the-art low-power DMF [M. Liou et al., 2001].

Published in:

Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on  (Volume:2 )

Date of Conference:

6-9 July 2003