A new digital transmitter based on delta sigma modulator with bus-splitting

被引：0

作者：

花再军 ^{[1
]}

Fan Xiangning ^{[1
]}

Liao Yilong ^{[1
]}

机构：

[1] Institute of RF-&OE-ICs,School of Information Science and Engineering,Southeast University

来源：

HighTechnologyLetters | 2018年 / 24卷 / 02期

基金：

中国国家自然科学基金;

关键词：

bus-splitting; error-feedback delta sigma modulator(EF-DSM); signal to noise ratio(SNR); digital transmitter; digital up mixer;

D O I：

暂无

中图分类号：

TN929.53 [蜂窝式移动通信系统（大哥大、移动电话手机）];

学科分类号：

摘要：

A new digital transmitter based on delta sigma modulator( DSM) with bus-splitting is presented in this paper. The second order low pass error-feedback delta sigma modulator( EF-DSM) is focused. The signal to noise ratio( SNR) of the EF-DSM is derived for different bus-splitting bits.Following the EF-DSM,a multi-bit digital up mixer is used for carrier frequency transform. In order to validate the theory of bus-splitting,two types of transmitters are implemented on FPGA for comparison,in which one is with non-bus-splitting and the other is with bus-splitting. The FPGA implemented transmitter with bus-splitting promotes the maximum operation speed by 39%,and reduces hardware consumptions more than 16%. Both single tone and orthogonal frequency division multiplexing( OFDM) signal source are used to evaluate the proposed transmitter.

引用

页码：117 / 124

页数：8

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