| 低复杂度可变带宽全数字调制器 |
| |
| 引用本文： | 卢莹莹,潘长勇,彭克武.低复杂度可变带宽全数字调制器[J].清华大学学报(自然科学版),2009(8). |
| |
| 作者姓名： | 卢莹莹 潘长勇 彭克武 |
| |
| 作者单位： | 清华大学微波与数字通信技术国家重点实验室;清华大学微电子所;清华大学电子工程系; |
| |
| 基金项目： | 国家“八六三”高技术项目(2007AA01Z2B6);;教育部新世纪优秀人才支持计划 |
| |
| 摘 要： | 针对不同通信系统的不同带宽要求,提出一种低复杂度数字带宽可配置调制器(D-BCM),该调制器基于数字基带的可配置速率变换模块,其中可配置速率变换模块将多种不同输入码率转换为同一输出码率,使得后端数模转换(DAC)和射频调制(RF)与传统调制器相同。其核心部件可配置速率变换模块由两部分组成:第一部分是可配置速率变换的上采样单元;第二部分是单一的去镜像滤波器,且通过对多种去镜像滤波器的比较得出N yqu ist滤波器更适合低复杂度的实现要求。文中详细阐述D-BCM结构,并重点设计和实现可配置速率变换模块,最后在窄带系统中验证了调制器可行性。
|
| 关 键 词： | 移动通信 带宽可配置调制器 速率变换 去镜像滤波器 Nyquist滤波器 |
Low-complexity bandwidth-configurable all-digital modulator |
| |
| LU Yingying,PAN Changyong,PENG Kewu.Low-complexity bandwidth-configurable all-digital modulator[J].Journal of Tsinghua University(Science and Technology),2009(8). |
| |
| Authors: | LU Yingying PAN Changyong PENG Kewu |
| |
| Institution: | 1.State Key Laboratory of Microwave and Digital Communication;Tsinghua University;Beijing 100084;China;2.Institute of Microelectronics;3.Department of Electronic Engineering;China |
| |
| Abstract: | A low complexity digital bandwidth-configurable modulator was developed based on a configurable rate-conversion module in the digital baseband for various bandwidth requirements in communication systems with traditional DAC and RF modules.The configurable rate conversion module works at multiple input sampling rates and one fixed output sampling rate.The module has an upsampling unit with a configurable rate-change factor and an image-rejection filter,which uses a Nyquist filter because of its simplicity.Th... |
| |
| Keywords: | mobile communication bandwidth-configurable modulat-or rate conversion image-rejection filter Nyquist filter |
| 本文献已被 CNKI 等数据库收录！ |
