软件无线电中频接收系统的研究与实现
摘要
自20世纪90年代以来，无线通信在全球范围内取得了突飞猛进的发展。无论是军用还是民用无线通信，在各种频段上都出现了许多新的系统和模式，为人们提供了多种多样的服务，满足了社会上各种各样的需求。与此同时，多频段和多模式的无线通信之间的互连互通与相互兼容就成了需要解决的问题。而软件无线电是无线电领域继模拟通信到数字通信、固定通信到移动通信之后，从硬件定义的无线通信到软件定义的无线通信的第三次革命。它以开放体系结构为基础，在硬件平台上应用软件工程技术来实现具有最大灵活性和适应性的各种无线通信系统，能有效地解决无线通信之间的互通、互容，因此，它一提出就受到人们的青睐。
本论文对软件无线电若干关键技术进行了较为深入的研究。首先，探讨了软件无线电几种常用的采样方式，比较和分析了它们的各自特点；接着，探讨软件无线电中的多速率信号处理技术，重点分析软件无线电中的带通信号正交抽取结构；最后，论文介绍了几种软件无线电基本结构，讨论中频接收系统AM、FM解调算法，并用MATLAB对软件无线电中的AM、FM解调过程进行了仿真。
利用DSP、CPLD、数字下变频器等器件，构造了一个软件无线电中频接收系统，对该系统下载AM解调程序，它可以执行AM信号的解调功能。
Since 1990s, wireless communication has advanced rapidly in the world. No matter in the military or civil wireless communication, a lot of new systems and modes have appeared in various frequency channels. They provide kinds of services to the people, satisfying various requirements of our society. Whereas, it has already become a great difficulty need to overcome that the interconnection and compatibility should exist in multi frequency channel wireless communication and multi mode wireless communication. On the other hand, after the migration from analog to digital, and from fixed to mobile, radio systems are undergoing the third revolution from hard-wired radios to software-defined radios (SDR). SDR, based on opening architecture, applies software engineering technique to realize various communication systems, those systems have the greatest flexibility and adaptability and can effectively solve the interconnection and compatibility in wireless communication. Consequently, SDR has been favored by the people since it was brought forward.
This paper has carry on comparatively deep researchs to several key technologies of SDR. Firstly, it probes into several kinds of common sampling in SDR, compares and analyzes their each characteristic. Secondly, it discusses multi rate digital signal process (MRDSP) technology in SDR, emphasis is put on the analysis of band pass signal orthogonal sampling structure. Thirdly, several basic structures of SDR are introduced, the AM and FM demodulation algorithms for IF receiver system are discussed, and the demodulation courses of AM and FM are simulated.
Moreover, this paper explores how to make use of DSP, CPLD, Digital down conversion (DDC) device, ect, to construct a SDR IF receiver which can carry out the demodulation function of AM signal if AM demodulation
program is downloaded.
本论文对软件无线电若干关键技术进行了较为深入的研究。首先，探讨了软件无线电几种常用的采样方式，比较和分析了它们的各自特点；接着，探讨软件无线电中的多速率信号处理技术，重点分析软件无线电中的带通信号正交抽取结构；最后，论文介绍了几种软件无线电基本结构，讨论中频接收系统AM、FM解调算法，并用MATLAB对软件无线电中的AM、FM解调过程进行了仿真。
利用DSP、CPLD、数字下变频器等器件，构造了一个软件无线电中频接收系统，对该系统下载AM解调程序，它可以执行AM信号的解调功能。
Since 1990s, wireless communication has advanced rapidly in the world. No matter in the military or civil wireless communication, a lot of new systems and modes have appeared in various frequency channels. They provide kinds of services to the people, satisfying various requirements of our society. Whereas, it has already become a great difficulty need to overcome that the interconnection and compatibility should exist in multi frequency channel wireless communication and multi mode wireless communication. On the other hand, after the migration from analog to digital, and from fixed to mobile, radio systems are undergoing the third revolution from hard-wired radios to software-defined radios (SDR). SDR, based on opening architecture, applies software engineering technique to realize various communication systems, those systems have the greatest flexibility and adaptability and can effectively solve the interconnection and compatibility in wireless communication. Consequently, SDR has been favored by the people since it was brought forward.
This paper has carry on comparatively deep researchs to several key technologies of SDR. Firstly, it probes into several kinds of common sampling in SDR, compares and analyzes their each characteristic. Secondly, it discusses multi rate digital signal process (MRDSP) technology in SDR, emphasis is put on the analysis of band pass signal orthogonal sampling structure. Thirdly, several basic structures of SDR are introduced, the AM and FM demodulation algorithms for IF receiver system are discussed, and the demodulation courses of AM and FM are simulated.
Moreover, this paper explores how to make use of DSP, CPLD, Digital down conversion (DDC) device, ect, to construct a SDR IF receiver which can carry out the demodulation function of AM signal if AM demodulation
program is downloaded.
引文
[1] Joe Mitola, The Software Radio Architecture, IEEE Communications Magazine, 1995,33(5):26-38
[2] Lackey and Upmall, SPEAKeasy:The Military Software Radio, IEEE Communications Magazine, 1995,33(5):56-61
[3] Hiroshi Tsurumi and Yasuo Suzuki, Broadband RF Stage Architecture for Software-Defined Radio in Handheld Terminal Applications, IEEE Communications Magazine, 1999,2:90-95
[4] Buracchini, E, The Software Radio Concept, IEEE Communications Magazine, 2000,38(9):138-143
[5] Kwang-Cheng Chen, Prasad, R, Poor, H.V., Software Radio, IEEE Personal Communications, 1999,6(4):12-12
[6] Jeffery A. Wepman, Analog-to-Digital and Their Applications in Radio Receivers, IEEE Communications Magazine, 1995,33(5):39-45
[7] Gord Wait, Avoiding Design Pitfalls In Multiprocessor DSP, Electronic Design, May 12,1997:95-98
[8] Texas Instrments, TMS320VC5402 Fixed-point Digital Signal Processor, 2000
[9] Texas Instrments, TMS320C5X User's Guide, 1999
[10] Mini-Circuits Inc., RF/IF Designer's Handbook, 1997
[11] Texas Instrments, THS5661A Data Sheet, 2002
[12] Analog Devices, Inc., AD9203 Data Sheet, 2001
[13] Analog Devices, Inc., AD8009 Data Sheet, 2000
[14] Analog Devices, Inc., AD6620 Data Sheet, 2001
[15] Altera Corporation, In-System Programmablility in MAX Devices
[16] Walt kester, Brad Brammn, Palii Hendricks, HIGH SPEED ADC APPLICATIONS, Analog Devices Inc. Application Note
[17] Walt kester, Undersampling Applications, Analog Devices Inc. Application Note
[18] Apostolis K. Salkintzis, Hong Nie and P.Takis Mathiopoulos, ADC and DSP Chanllenges in the Development of Software Radio Base Stations, IEEE Personal Communications, August 1999:47-55
[19] 杨小牛，楼才义，徐建良，软件无线电原理与应用，第一版，2001，电子工业出版社
[20] 钮心忻，杨义先，软件无线电技术与应用，第一版，2000，北京邮电大学出版社
[21] 王念旭，DSP基础与应用系统设计，第一版，2001，北京航空航天大学出版社
[22] 张雄伟，DSP芯片的原理与开发应用，第一版，2003，电子工业出版社
[23] 王金龙，沈良，任国春等，无线通信系统的DSP实现，第一版，2002，人民邮电出版社
[24] 戴明桢，周建江，TMS320C54X DSP结构、原理及应用，第一版，2001，北京航空航天大学出版社
[25] 丁玉美，高西全，彭学愚，数字信号处理，第一版，1994，西安电子科技大学出版社
[26] 候伯亨，顾新，VHDL硬件描述语言与数字逻辑电路设计，第二版，1999，西安电子科技大学出版社
[27] 邹鲲、袁俊泉、龚亨铱，MATLAB 6.X信号处理，第一版，2002，清华大学出版社
[28] 彭林，第三代移动通信技术，第一版，2001，电子工业出版社
[29] 赵民忠，短波软件无线电通信系统中的DSP技术，现代电子技术，2002，12：65-68
[30] 肖维民等，软件无线电综述，电子学报，1998，2：65-70
[31] 陈伟，DSP技术在软件无线电系统中的应用研究，信息技术，2002，1：2-4
[32] 张建军等，一种基于AD6620的中频数字解调方案，电讯技术，2003，1：84
-87
[33] 李青鹏，高凯，路军，数字通道芯片AD6620的原理及应用，国外电子元器件，2002，10：52-53
[34] 李家欣，王乘等，基于AD6620和TMS320C6X的软件无线电接收子系统，电子技术应用，2002，5：62-64
[35] 刘东华，欧建平，数字中频率波技术及其在软件无线电中的应用，无线通信技术，2000，2：24-28
[36] 张碧雄，数字接收机的中频采样技术应用，电子产品世界，2003，5／下半月：34-35
[37] 杨青，赵明忠，软件无线电中的数字下变频技术，现代电子技术，2002，12：71-73
[38] 高凯，李青鹏，王世练，AD6620工作原理及其在中频数字化直扩接收机中的应用，21IC中国电子网，2003，3，18
[39] 孙丹丹，软件无线电接收机的计算机仿真，哈尔滨工业大学，硕士学位论文，2002
[40] 郑剑泉，基于软件无线电中频信号的数字化接收解调研究，南京航空航天大学，硕士学位论文，2003
[2] Lackey and Upmall, SPEAKeasy:The Military Software Radio, IEEE Communications Magazine, 1995,33(5):56-61
[3] Hiroshi Tsurumi and Yasuo Suzuki, Broadband RF Stage Architecture for Software-Defined Radio in Handheld Terminal Applications, IEEE Communications Magazine, 1999,2:90-95
[4] Buracchini, E, The Software Radio Concept, IEEE Communications Magazine, 2000,38(9):138-143
[5] Kwang-Cheng Chen, Prasad, R, Poor, H.V., Software Radio, IEEE Personal Communications, 1999,6(4):12-12
[6] Jeffery A. Wepman, Analog-to-Digital and Their Applications in Radio Receivers, IEEE Communications Magazine, 1995,33(5):39-45
[7] Gord Wait, Avoiding Design Pitfalls In Multiprocessor DSP, Electronic Design, May 12,1997:95-98
[8] Texas Instrments, TMS320VC5402 Fixed-point Digital Signal Processor, 2000
[9] Texas Instrments, TMS320C5X User's Guide, 1999
[10] Mini-Circuits Inc., RF/IF Designer's Handbook, 1997
[11] Texas Instrments, THS5661A Data Sheet, 2002
[12] Analog Devices, Inc., AD9203 Data Sheet, 2001
[13] Analog Devices, Inc., AD8009 Data Sheet, 2000
[14] Analog Devices, Inc., AD6620 Data Sheet, 2001
[15] Altera Corporation, In-System Programmablility in MAX Devices
[16] Walt kester, Brad Brammn, Palii Hendricks, HIGH SPEED ADC APPLICATIONS, Analog Devices Inc. Application Note
[17] Walt kester, Undersampling Applications, Analog Devices Inc. Application Note
[18] Apostolis K. Salkintzis, Hong Nie and P.Takis Mathiopoulos, ADC and DSP Chanllenges in the Development of Software Radio Base Stations, IEEE Personal Communications, August 1999:47-55
[19] 杨小牛，楼才义，徐建良，软件无线电原理与应用，第一版，2001，电子工业出版社
[20] 钮心忻，杨义先，软件无线电技术与应用，第一版，2000，北京邮电大学出版社
[21] 王念旭，DSP基础与应用系统设计，第一版，2001，北京航空航天大学出版社
[22] 张雄伟，DSP芯片的原理与开发应用，第一版，2003，电子工业出版社
[23] 王金龙，沈良，任国春等，无线通信系统的DSP实现，第一版，2002，人民邮电出版社
[24] 戴明桢，周建江，TMS320C54X DSP结构、原理及应用，第一版，2001，北京航空航天大学出版社
[25] 丁玉美，高西全，彭学愚，数字信号处理，第一版，1994，西安电子科技大学出版社
[26] 候伯亨，顾新，VHDL硬件描述语言与数字逻辑电路设计，第二版，1999，西安电子科技大学出版社
[27] 邹鲲、袁俊泉、龚亨铱，MATLAB 6.X信号处理，第一版，2002，清华大学出版社
[28] 彭林，第三代移动通信技术，第一版，2001，电子工业出版社
[29] 赵民忠，短波软件无线电通信系统中的DSP技术，现代电子技术，2002，12：65-68
[30] 肖维民等，软件无线电综述，电子学报，1998，2：65-70
[31] 陈伟，DSP技术在软件无线电系统中的应用研究，信息技术，2002，1：2-4
[32] 张建军等，一种基于AD6620的中频数字解调方案，电讯技术，2003，1：84
-87
[33] 李青鹏，高凯，路军，数字通道芯片AD6620的原理及应用，国外电子元器件，2002，10：52-53
[34] 李家欣，王乘等，基于AD6620和TMS320C6X的软件无线电接收子系统，电子技术应用，2002，5：62-64
[35] 刘东华，欧建平，数字中频率波技术及其在软件无线电中的应用，无线通信技术，2000，2：24-28
[36] 张碧雄，数字接收机的中频采样技术应用，电子产品世界，2003，5／下半月：34-35
[37] 杨青，赵明忠，软件无线电中的数字下变频技术，现代电子技术，2002，12：71-73
[38] 高凯，李青鹏，王世练，AD6620工作原理及其在中频数字化直扩接收机中的应用，21IC中国电子网，2003，3，18
[39] 孙丹丹，软件无线电接收机的计算机仿真，哈尔滨工业大学，硕士学位论文，2002
[40] 郑剑泉，基于软件无线电中频信号的数字化接收解调研究，南京航空航天大学，硕士学位论文，2003