一种基于压缩采样的SDR接收机AIC前端设计.pdf

Hans Journal of Wireless Communications 无线通信, 2014, 4, 120-125 Published Online December 2014 in Hans. /journal/hjwc /10.12677/hjwc.2014.46019 A Design of AIC for SDR Front-End Based on Compressive Sampling Hongfeng Zhang, Jian Qian, Yizhi Zhao School of Communication Engineering, Hangzhou Dianzi University, Hangzhou Email: 954329171@ nd th th Received: Oct. 22 , 2014; revised: Nov. 16 , 2014; accepted Nov. 25 , 2014 Copyright © 2014 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract Conventional six-port network can down convert the RF signal to baseband directly; its output power contains the phase and amplitude information. We can get baseband signal after the A/D sampling, but it will face the problem of high sampling rate. Compressive sampling can get the useful dates at a lower sampling frequency than Nyquist rate. The paper uses compression sam- pling technique into Six-port direct conversion receiver and proposes a new analog to information conversion (AIC). The AIC can obtain large amounts of data at a lower sampling rate. The AIC may be a satisfactory front-end of software defined radio. This article does a performance simulation of AIC front-end. Keywords RF Six-Port Network, Analog to Information Conversion, SDR, Compressive Sampling 一种基于压缩采样的SDR接收机AIC 前端设计 张洪峰，钱 建，赵毅智 杭州电子科技大学通信工程学院，杭州 Email: 954329171@ 收稿日期：2014年10月22 日；修回日期：2014年11月16 日；录用日期：2014年11月25 日 120 一种基于压缩采样的SDR 接收机AIC 前端设计 摘 要 传统的射频六端口网络可以直接将射频信号下变频为基带信号，它的输出