钟达+郭伟+习勇+唐麒
摘 要: 针对基于软件无线电架构的现代移动通信手持终端设计,研究了基于SB3500国产多核多线程数字信号处理器的软件无线电设计方法,实现了基于SB3500的软件无线电硬件系统。在此基础上开发了一套适合该硬件系统的OFDM通信波形软件,用于验证该硬件系统是否满足手持终端小型化和低功耗的要求。研究表明,使用该国产多核多线程处理器进行软件无线电系统的设计开发具有广泛的应用前景。
关键词: 软件无线电; 手持终端; SB3500; 多核多线程处理器
中图分类号: TN929.5?34; TP399 文献标识码: A 文章编号: 1004?373X(2014)21?0005?04
Design of software defined radio system based on multi?core processor SB3500
ZHONG Da1, GUO Wei2, XI Yong1, TANG Qi1
(1. College of Electronic Science & Engineering, National University of Defense Technology, Changsha 410073, China;
2. Wuxi DSP Technologies Inc, Wuxi 214135, China)
Abstract: For design of the contemporary mobile communication hand?held terminal, a design method of software defined radio (SDR) system based on domestic multi?core and multi?threading digital signal processor SB3500 is studied. The SDR hardware system based on SB3500 was implemented. An OFDM communication waveform software suitable for this hardware system was developed on the basis of this method to verify whether the hardware system can satisfy the miniaturization and low?power consumption requirements of the hand?held terminal. The research result shows this domestic multi?core and multi?threading processor for developing the SDR system has a good application prospect.
Keywords: SDR; hand?held terminal; SB3500; multi?core and multi?threading processor,
0 引 言
随着4G通信网络的不断发展,手持智能终端在满足4G基本通信需求的基础上,还需要兼容2G/3G网络以及蓝牙、WiFi、FM、数字电视等各种通信制式,这对于手持终端的通信制式兼容性设计提出了较高要求。软件无线电技术采用开放式体系结构,通过在通用硬件信号处理平台上加载不同的通信波形软件,可以兼容各种无线通信制式,因此成为新一代的无线电通信技术[1]。软件无线电技术为4G手持智能终端的兼容性设计提供了思路和方法,从而成为当今移动通信领域的一个重要发展趋势,具有非常良好的发展前景。
但在软件无线电手持终端设计中,终端对系统的功耗和小型化这两方面提出了极高的要求,目前国内软件无线电领域在手持智能终端设计方面尚未能完全有效地解决低功耗与小型化问题。如何满足手持终端设备对低功耗和小型化的要求,是当前亟需解决的问题。……