标题: | 软体无线电之研究:宽频分码多重进接空-时犁耙接收器之DSP实现 A Study on Software Radio: DSP Implementation |
作者: | 陈世芳 Shih-Fang Chen 李大嵩 Dr. Ta-Sung Lee 电信工程研究所 |
关键字: | 软体无线电;数位讯号处理器;宽频分码多重进接;多重进接干扰;空-时犁耙接收器;智慧型阵列天线;Software radio;DSP;W-CDMA;MAI;Space-time RAKE receiver;Smart antenna |
公开日期: | 2000 |
摘要: | 软体无线电架构的发展,近几年来已成为一个极受瞩目的研究领域。在本论文中,吾人首先介绍软体无线电(software radio)平台之概念,并整合宽频分码多重进接(W-CDMA)技术,发展出结合智慧型阵列天线讯号处理之空-时犁耙接收器(space-time RAKE receiver)。由模拟与实作结果显示,在多重进接干扰(MAI)的环境下,此架构能有效降低误码率(BER),提高系统效能。系统架构采用参数载入式设计,使其具备软体无线电要求之可程式化与原件模组化特性,并可透过修改参数,轻易变更系统设定,以符合在不同环境下之通讯规格。吾人根据TMS320C6201 DSP数位信号处理器应用模板来模拟及实现所提之架构,并配合其硬体特性,如平行运算处理单元,环状定址模式与高速化多功能串列埠等,发展出一具备可程式与相容于第三代行动通讯系统之接收器基频处理模组。 Recently, the development of software define radio has been an interesting research area in wireless communication signal processing. In this thesis, we first introduce the concept of software define radio. In the following, we propose a smart array antenna based space-time RAKE receiver for wideband CDMA (W-CDMA). It can be shown form simulation and implementation results that the proposed architecture can effectively reduce the bit-error-probability (BER) in the presence of multiple access interference (MAI). For the purpose of programmability and modularity, the proposed system architecture adopts the parameter-download-type scheme. By modifying the core parameter, we can reconfigure the proposed system easily to meet the different specifications. To realize the system, we exploit some of the hardware characteristics offered by TI TMS320C6201 DSP processor, such as parallel ALUs, circular addressing mode, McBSP device, and so on, to develop a programmable receiving backend compatible with 3GPP. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT890435045 http://hdl.handle.net/11536/67324 |
显示于类别: | Thesis |