G.729建议的实现及ATM语音传送技术研究
摘要
摘 要
ITU-T G.729建议是国际电信联盟于1996年提出的速率为8Kbps的语音压缩编码的标准。本文详细讨论了多路G.729a语音编解码器在一片DSP处理器TMS320C6202上实时实现的软硬件设计和关键技术。结合某军事通信网设备的需要，进而对G.729语音编码的码流的ATM适配方案进行了分析。提出了用一种新的ATM适配技术--AAL2进行适配的方案。并对AAL2进行了分析研究。
这种低比特率语音编码和AAL2在支持实时、可变速率、短分组业务应用中的优势相结合的方案，可解决通信网中无线中继存在的传输质量和带宽受限的问题。
ABSTRACT
ITU-T Recommendation G.729 was a 8kbit/s speech codec approved by International Telecommunication Union in 1996. In this paper,we give a detail discussion on the key technology ,including software and hardware designing of G.729a multi-channel speech codec′realtime implemention on a simple DSP processor- TMS320C6202.In combination with the requirements of a military communication network ,the ATM adaptation solution of G.729 coder′bit stream is analyzed.A kind of new ATM adaptation technology-AAL2 is introduced.The analyse and research of AAL2 are provided.
The combination of advantage in the two technology can solve the problem of transmission QOS and bandwidth limitaion of wireless relay network.
Wu Wei (computer application technology)
Directed by prof. Chen Jilu
ITU-T G.729建议是国际电信联盟于1996年提出的速率为8Kbps的语音压缩编码的标准。本文详细讨论了多路G.729a语音编解码器在一片DSP处理器TMS320C6202上实时实现的软硬件设计和关键技术。结合某军事通信网设备的需要，进而对G.729语音编码的码流的ATM适配方案进行了分析。提出了用一种新的ATM适配技术--AAL2进行适配的方案。并对AAL2进行了分析研究。
这种低比特率语音编码和AAL2在支持实时、可变速率、短分组业务应用中的优势相结合的方案，可解决通信网中无线中继存在的传输质量和带宽受限的问题。
ABSTRACT
ITU-T Recommendation G.729 was a 8kbit/s speech codec approved by International Telecommunication Union in 1996. In this paper,we give a detail discussion on the key technology ,including software and hardware designing of G.729a multi-channel speech codec′realtime implemention on a simple DSP processor- TMS320C6202.In combination with the requirements of a military communication network ,the ATM adaptation solution of G.729 coder′bit stream is analyzed.A kind of new ATM adaptation technology-AAL2 is introduced.The analyse and research of AAL2 are provided.
The combination of advantage in the two technology can solve the problem of transmission QOS and bandwidth limitaion of wireless relay network.
Wu Wei (computer application technology)
Directed by prof. Chen Jilu
引文
参 考 文 献
[1] 黄海明、诸鸿文、顾尚杰，基于ATM的话音交换技术，上海交通大学学报，1999，第33卷 第1期：P111～114
[2] 许炳，适应多媒体业务的ATM适配层AAL2，电信快报，1999，第1期：P23～26
[3] 龚向阳、程时端，ATM话音传送技术，中兴新通讯，2000，第2期：P18～22
[4] 李锦宇、王仁华，分组话音编解码技术，中兴新通讯，2000，第2期：P23～26
[5] 1996 ITU-T Recommendation G.729, CODING OF SPEECH AT 8 kbit/s USING CONJUGATE-STRUCTURE ALGEBRAIC-CODE-EXCITED LINEAR-PREDICTION(CS-ACELP),1996
[6] ITU-T Recommendation G.729 Annex A, Reduced complexity 8 kbit/s CS-ACELP speech codec,1996
[7] ITU-T Recommendation G.729 Annex B, A silence compression scheme for G.729 optimized for terminals conforming to Recommendation V.70,1996
[8] 张雄伟，DSP芯片的原理与开发应用，北京，电子工业出版社，2000
[9] 任丽香、马淑芬、李方慧，TMS320C6000系列DSPs的原理与应用，北京，电子工业出版社，2000
[10] TI公司应用文档、数据手册
[11] TMS320C62xx CPU and Instruction Set Reference Guide,Texas Instruments Incorporated,1999
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[13] TMS320C6000 Code Composer Studio, Texas Instruments Incorporated,2000
[14] TMS320C6202 Fixed-point digital signal processor, TexasInstruments Incorporated,1999
[15] TMS320C6000 Technical Brief,Texas Instruments Incorporated,1999
[16] TMS320C62xx Programmer's Guide, Texas Instruments Incorporated,1999
[17] The eXpressDSP Algorithm Standard, Texas Instruments Incorporated,1999
[18] TMS320C6000 BGA Manufacturing Considerations，Texas Instruments Incorporated, 2001
[19] TMS320C6000 Board Design: Considerations for Debug，Texas Instruments Incorporated, 1999
[20] TMS320C6000 EMIF to External Flash Memory，Texas Instruments Incorporated, 1999
[21] TMS320C6000 McBSP Interface to a ST-Bus Device，Texas Instruments Incorporated, 1999
[22] TMS320C6000 Multichannel Communications System Interface，Texas Instruments Incorporated, 2000
[23] A Multichannel Serial Port Driver using DMA on the TMS320C6000 DSP，Texas Instruments Incorporated, 1999
[24] TMS320C6000 DMA Applications，Texas Instruments Incorporated, 1999
[25] TMS320C6000 u-Law and a-Low Companding with Software or the McBSP，Texas Instruments Incorporated, 2000
[26] A Multichannel/Algorithm Implementation on the TMS320C6000 DSP，Texas Instruments Incorporated, 2000
[27] TMS320C6000 McBSP as a TDM Highway，Texas Instruments Incorporated, 2000
[28] TMS320C6000 Multichannel Vocoder(TDK) Target Side Design，Texas Instruments Incorporated, 2000
[29]An Audio Example Using DSP/BIOS，Texas Instruments Incorporated,1999
[30] How to get started with the DSP/BIOS kernel, Texas Instruments Incorporated,2001
[31] Designing an Embedded Operating System With the TMS320 Family of DSPs，Texas Instruments Incorporated, 1998
[32] DSP/BIOS user guide, Texas Instruments Incorporated,1999
[33] Using DSP/BIOS I/O in Multichannel Systems，Texas Instruments Incorporated, 2000
[34] Writing Flexible Device Drivers for DSP/BIOS，Texas Instruments Incorporated,2000
[35] Making DSP Algorithms Compliant with the TMS320 DSP Algorithm Interface，Texas Instruments Incorporated, 2000
[36] The TMS320 DSP Algorithm Standard，Texas Instruments Incorporated,2000
[37] Code Composer Studio White Paper，Texas Instruments Incorporated,1999
[38] TMS320C6000 Assembly language Tools User's Guide，Texas Instruments Incorporated,2001
[39] TMS320C62x DSP Library Programmer's Reference，Texas Instruments Incorporated,2000
[40] 赵惠玲, ATM、帧中继、IP技术与应用, 北京，电子工业出版社，1998
[41] 张尧学、王晓春、赵艳标，计算机网络与Internet教程，北京，清华大学出版社，1999
[42] 信息产业部电子第54研究所内部资料
[43] ITU-T Recommendation I.362,B-ISDN ATM Adaptation Function Description,1993
[44] ITU-T Recommendation I.363.2, B-ISDN ATM Adaptation Layertype 2 specification,1997
[45] ITU-T Recommendation I.366.2,AAL Type 2 Service Specific Convergence Sunblayer for Trunking,1999
[46] Kevin Zhang,Packet Delay Variation in Voice Trunking using AAL2,Australia,ATM Forum contribution 98-0630,1998
[47] 吴巍，xxx通信网系统总体技术方案论证报告，石家庄，信息产业部电子第54研究所，1999
[1] 黄海明、诸鸿文、顾尚杰，基于ATM的话音交换技术，上海交通大学学报，1999，第33卷 第1期：P111～114
[2] 许炳，适应多媒体业务的ATM适配层AAL2，电信快报，1999，第1期：P23～26
[3] 龚向阳、程时端，ATM话音传送技术，中兴新通讯，2000，第2期：P18～22
[4] 李锦宇、王仁华，分组话音编解码技术，中兴新通讯，2000，第2期：P23～26
[5] 1996 ITU-T Recommendation G.729, CODING OF SPEECH AT 8 kbit/s USING CONJUGATE-STRUCTURE ALGEBRAIC-CODE-EXCITED LINEAR-PREDICTION(CS-ACELP),1996
[6] ITU-T Recommendation G.729 Annex A, Reduced complexity 8 kbit/s CS-ACELP speech codec,1996
[7] ITU-T Recommendation G.729 Annex B, A silence compression scheme for G.729 optimized for terminals conforming to Recommendation V.70,1996
[8] 张雄伟，DSP芯片的原理与开发应用，北京，电子工业出版社，2000
[9] 任丽香、马淑芬、李方慧，TMS320C6000系列DSPs的原理与应用，北京，电子工业出版社，2000
[10] TI公司应用文档、数据手册
[11] TMS320C62xx CPU and Instruction Set Reference Guide,Texas Instruments Incorporated,1999
[12] TMS320C62xx Peripherals Reference Guide,Texas Instruments Incorporated,1999
[13] TMS320C6000 Code Composer Studio, Texas Instruments Incorporated,2000
[14] TMS320C6202 Fixed-point digital signal processor, Texas
[15] TMS320C6000 Technical Brief,Texas Instruments Incorporated,1999
[16] TMS320C62xx Programmer's Guide, Texas Instruments Incorporated,1999
[17] The eXpressDSP Algorithm Standard, Texas Instruments Incorporated,1999
[18] TMS320C6000 BGA Manufacturing Considerations，Texas Instruments Incorporated, 2001
[19] TMS320C6000 Board Design: Considerations for Debug，Texas Instruments Incorporated, 1999
[20] TMS320C6000 EMIF to External Flash Memory，Texas Instruments Incorporated, 1999
[21] TMS320C6000 McBSP Interface to a ST-Bus Device，Texas Instruments Incorporated, 1999
[22] TMS320C6000 Multichannel Communications System Interface，Texas Instruments Incorporated, 2000
[23] A Multichannel Serial Port Driver using DMA on the TMS320C6000 DSP，Texas Instruments Incorporated, 1999
[24] TMS320C6000 DMA Applications，Texas Instruments Incorporated, 1999
[25] TMS320C6000 u-Law and a-Low Companding with Software or the McBSP，Texas Instruments Incorporated, 2000
[26] A Multichannel/Algorithm Implementation on the TMS320C6000 DSP，Texas Instruments Incorporated, 2000
[27] TMS320C6000 McBSP as a TDM Highway，Texas Instruments Incorporated, 2000
[28] TMS320C6000 Multichannel Vocoder(TDK) Target Side Design，Texas Instruments Incorporated, 2000
[29]
[30] How to get started with the DSP/BIOS kernel, Texas Instruments Incorporated,2001
[31] Designing an Embedded Operating System With the TMS320 Family of DSPs，Texas Instruments Incorporated, 1998
[32] DSP/BIOS user guide, Texas Instruments Incorporated,1999
[33] Using DSP/BIOS I/O in Multichannel Systems，Texas Instruments Incorporated, 2000
[34] Writing Flexible Device Drivers for DSP/BIOS，Texas Instruments Incorporated,2000
[35] Making DSP Algorithms Compliant with the TMS320 DSP Algorithm Interface，Texas Instruments Incorporated, 2000
[36] The TMS320 DSP Algorithm Standard，Texas Instruments Incorporated,2000
[37] Code Composer Studio White Paper，Texas Instruments Incorporated,1999
[38] TMS320C6000 Assembly language Tools User's Guide，Texas Instruments Incorporated,2001
[39] TMS320C62x DSP Library Programmer's Reference，Texas Instruments Incorporated,2000
[40] 赵惠玲, ATM、帧中继、IP技术与应用, 北京，电子工业出版社，1998
[41] 张尧学、王晓春、赵艳标，计算机网络与Internet教程，北京，清华大学出版社，1999
[42] 信息产业部电子第54研究所内部资料
[43] ITU-T Recommendation I.362,B-ISDN ATM Adaptation Function Description,1993
[44] ITU-T Recommendation I.363.2, B-ISDN ATM Adaptation Layer
[45] ITU-T Recommendation I.366.2,AAL Type 2 Service Specific Convergence Sunblayer for Trunking,1999
[46] Kevin Zhang,Packet Delay Variation in Voice Trunking using AAL2,Australia,ATM Forum contribution 98-0630,1998
[47] 吴巍，xxx通信网系统总体技术方案论证报告，石家庄，信息产业部电子第54研究所，1999