A multi-bit sigma-delta converter for UWB OFDM systems

2010 International Symposium on Signals, Systems and Electronics Pub Date : 2010-10-21 DOI:10.1109/ISSSE.2010.5607014

Yingxin Zhao, L. Ge, Shuang Wang, Yuang Jin, M. Fu, Hong Wu

引用次数: 0

Abstract

A multi-bit discrete time sigma-delta converter for an orthogonal frequency division multiplexing ultrawideband system has been designed. The overall sigma-delta converter consists of two modulators. The low and high subbands of signal are operated by using third-order low pass and fourth-order band pass modulator respectively. A simulation has been designed to realize the system with the converter according to the IEEE 802.15.3a standard. The results show that this architecture is well suited for orthogonal frequency division multiplexing ultrawideband system and the system has better noise shaping and BER performance.

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用于UWB OFDM系统的多比特σ - δ转换器

设计了一种用于正交频分复用超宽带系统的多位离散时间σ - δ变换器。整个σ - δ变换器由两个调制器组成。信号的低子带和高子带分别由三阶低通和四阶带通调制器实现。根据IEEE 802.15.3a标准，设计了一个仿真程序来实现该系统。结果表明，该结构非常适合于正交频分复用超宽带系统，系统具有良好的噪声整形和误码率性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2010 International Symposium on Signals, Systems and Electronics

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