自适应编码调制识别技术研究
摘要
为了研究能适应环境变化的无线传输系统，提高无线通信系统的性能，就需要用可编程数字电路来取代传统电路，采用通常所说的软件无线电(SDR)的概念。本论文采用隐马尔可夫模型(HMM)来减小解码与解调选择错误。为了获得更好的系统性能，本系统采用极大似然编码与调制转换方案，通过CSI获得的编码与调制转换概率以及基于解码与解调选择错误概率来选择基于HMM的调制方案。论文提出了两种通过增加编码间最小距离来减小DSE的方法，即利用网格编码估计补偿和基于LDPC编码与和-积解码算法的盲调制识别技术。并着重利用对调制方案识别很重要的相位误差补偿技术。
In order to achieve high performance in wireless communication systems, it is necessary to consider a radio transceiver system able to adapt to changes in the environment. This calls for the replacement of the conventional circuit by a programmable digital circuit. This is known as Software Defined Radio (SDR). Decreases decoder and demodulator selection error using a Hidden-Markov Model (HMM) in this paper. In order to estimate the switching patterns of the encoder and modulator, our proposed system selects the maximum likelihood encoder and modulator transition patterns. The selection uses both encoder and modulator transition probability based on the HMM obtained by CSI as well as Decoder and Demodulator Selection Error probabilities .We propose two methods for reducing DSE by increasing the minimum distance between two encoders. One proposes a trellis encoder estimation scheme that compensates for this problem. The other method consists of a blind modulation identification technique for an adaptive coded modulation scheme based on LDPC codes and the Sum-Product decoding algorithm. Attention is paid to the phase error-correcting technique using the decoding result, which is critical for the modulation scheme identification.
In order to achieve high performance in wireless communication systems, it is necessary to consider a radio transceiver system able to adapt to changes in the environment. This calls for the replacement of the conventional circuit by a programmable digital circuit. This is known as Software Defined Radio (SDR). Decreases decoder and demodulator selection error using a Hidden-Markov Model (HMM) in this paper. In order to estimate the switching patterns of the encoder and modulator, our proposed system selects the maximum likelihood encoder and modulator transition patterns. The selection uses both encoder and modulator transition probability based on the HMM obtained by CSI as well as Decoder and Demodulator Selection Error probabilities .We propose two methods for reducing DSE by increasing the minimum distance between two encoders. One proposes a trellis encoder estimation scheme that compensates for this problem. The other method consists of a blind modulation identification technique for an adaptive coded modulation scheme based on LDPC codes and the Sum-Product decoding algorithm. Attention is paid to the phase error-correcting technique using the decoding result, which is critical for the modulation scheme identification.
引文
1 J. Mitola, "The software radio architecture, " IEEE Commun. Mag., vol. 33, no. 5, pp. 26-38, May 1995.
2 "Special issue on software radio, " IEEE Communications Magazine, vol. 37, no. 2, 1999-2.
3 "Special issue on software radio, " IEEE Personal Communications Magazine, vol. 6, no. 24, 1999-8.
4 E. K. Track, J. Rosa, and D. Gupta, "Highly compact & efficient jtrs radios using superconductor microelectronics a quantum leap in performance: the cryopackage, " SDR Technical Conference and Product Exposition, HW02-003 Florida USA, 2003-11.
5 J. Rosa, D. Gupta, and W. Littlefield, "Jtrs frequency extension beyond 2ghz and satcom-on-the-move (sotm) using superconductor microelectronics - a quantum leap in performance, " SDR Technical Conference and Product Exposition, HW02-004 Florida USA, 2003-11.
6 G. Burns, P. Gruijters, and A. van Wei, "Reconfigurable accelerators enable efficient sdr for low-cost consumer devices, " SDR Technical Conference and Product Exposition, HW01-004 Florida USA, 2003-11.
7 Z. Ye, Y. Kim, and A. Schooler, "Flexible chip rate processor for cdma rate receiver, " SDR Technical Conference and Product Exposition, HW01-002 Florida USA, 2003-11.
8 C. Dolwin, "Deign of an sdr based rake receiver, " SDR Technical Conference and Product Exposition, HW01-001 Florida USA, 2003-11.
9 R. Burgess, "A software framework for model driven configuration and control of wireless baseband systems, "
10 M. R. Turner, "Software defined radio solutions a military radio perspective, "
11 C. Serra, E. Nicollet, and S. Martin, "Software radio architecture and waveform portability, "
12 "Authorization and use of software defined radio, " Federal Communications Commision Report, FCC01-264, 2001-9.
13 Y. Suzuki, K. Oda, R. Hidaka, H. Harada, T. Hamai, and T. Yokoi, "Technical
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14 Y. Suzuki, H. Harada, K. Uehara, T. Fujii, Y. Yokoyama, K. Oda, and R. Hidaka, "Adaptability check during software installation in software defined radio," IEICE Trans. Commun., vol. E86-B, no. 12, pp. 3392-3400, 2003-12.
15 M. R. Turner, "Software defined radio solutions a military radio perspective,"
16 C. F. LAM, T. D. DOAN, K. SAKAGUCHI, J. ichi TAKADA, and K. ARAKI, "Implementation of radio security module in globally roaming sdr terminals," IEICE Software Radio Technical Report, SR03-04, 2003-6.
17 C. F. Lam, K. Sakaguchi, J. ichi Takada,, and K. Araki, "Radio security module that enables global roaming of sdr terminal while complying with local radio regulation," 2003 Fall IEEE Vehicular Technology Conference (VTC 2003 Fall), (Orlando, FL, USA), 2003-10.
18 K. Okuike, H. Uchikawa, K. Ikemoto, K. Umebayashi, and R. Kohno, "A framework using acs (automatic certification system) for software defined radio," IEICE Software Radio Technical Report, SR02-24, pp. 95-100, 2002-12.
19 K. Okuike, K. Umebayashi, and R. Kohno,"A regulatory framework using automatic certification system for software defined radio," 2003 Software Defined Radio Technical Conference and Product Exposition (SDR' 03), (Orlando, FL, USA), 2003-11.
20 K. Okuike, H. Uchikawa, K. Ikemoto, K. Umebayashi, and R. Kohno,"A study on on-board automatic certificating system (acs) for software defined radio," IEICE Software Radio Technical Report, SR02-10, pp. 7-13, 2002-7.
21 K. Okuike, H. Uchikawa, K. Ikemoto, K. Umebayashi, and R. Kohno,"On-board automatic certificating system (acs) for software defined radio," 2002 SDR Technical Conferece(SR02), San Diego(USA), pp. 103-106, 2002-11.
22 M. Togooch, K. Sakaguchi, J. ichi Takada, and K. Araki,"Automatic calibration unit (acu) and acu employed authorization procedure (amap) for sdr," SDRF-02-Ⅰ-0020-V0.00.
23 C. F. LAM, K. SAKAGUCHI, J. ichi TKADA, and K. ARAKI,"Implementation of radio security module for global software defined radios security architecture," IEICE Software Radio Technical Report, SR03-4, pp. 23-27, 2003-6.
24 杨小牛，楼才义，徐建良．软件无线电原理与应用．电子工业出版社，2001
25 Walter Zuttlebee．软件无线电技术与实现．电子工业出版社，2004
26 Jeffrey H．Need．软件无线电—无线电工程的现代方法．人民邮电出版社，200427 赵苏鉴，栗欣，姚彦．宽带软件无线电接收机解决方案．清华大学电子工程系，微波与数字通信国家重点实验室．
28 熊庆过．软件无线电技术的研究现状及关键技术．武汉科技大学．文章编号：1009-2552(2003)05-0097-02
29 骆骋，吴征，栗欣．软件无线电数字前端的一种新实现方法．无线通信技术．2000，第三期
30 杨留清，张闽申，徐菊英等编著．数字移动通信系统．人民邮电出版社，1995
31 William．H．Tranter等．通信系统仿真原理与无线应用．机械工业出版社，2005
32 飞思科技产品研发中心．MATLAB7辅助信号处理技术与应用．电子工业出版社，2005
33 陈晓毅，姚庆栋．软件无线电中的调制方式识别．中图分类号：TN911，文献标识码：A，文章编号：1003 8329(2001)04 0009 04
34 方惠英，赵民建，陈文正．基于软件无线电的突发模式8DPSK的全数字化实现．广东深圳深圳中兴通讯有限公司；浙江大学 信息与电子工程系．
35 杜琳．软件无线电实验平台的分析与设计[D]．北京航空航天大学，2000
36 王立宁，乐光新，詹菲．Matlab与通信仿真[M]．人民邮电出版社，2000
37 张常年，赵红怡，李飞．基于MATLAB的软件无线电．北方工业大学工学院．
2 "Special issue on software radio, " IEEE Communications Magazine, vol. 37, no. 2, 1999-2.
3 "Special issue on software radio, " IEEE Personal Communications Magazine, vol. 6, no. 24, 1999-8.
4 E. K. Track, J. Rosa, and D. Gupta, "Highly compact & efficient jtrs radios using superconductor microelectronics a quantum leap in performance: the cryopackage, " SDR Technical Conference and Product Exposition, HW02-003 Florida USA, 2003-11.
5 J. Rosa, D. Gupta, and W. Littlefield, "Jtrs frequency extension beyond 2ghz and satcom-on-the-move (sotm) using superconductor microelectronics - a quantum leap in performance, " SDR Technical Conference and Product Exposition, HW02-004 Florida USA, 2003-11.
6 G. Burns, P. Gruijters, and A. van Wei, "Reconfigurable accelerators enable efficient sdr for low-cost consumer devices, " SDR Technical Conference and Product Exposition, HW01-004 Florida USA, 2003-11.
7 Z. Ye, Y. Kim, and A. Schooler, "Flexible chip rate processor for cdma rate receiver, " SDR Technical Conference and Product Exposition, HW01-002 Florida USA, 2003-11.
8 C. Dolwin, "Deign of an sdr based rake receiver, " SDR Technical Conference and Product Exposition, HW01-001 Florida USA, 2003-11.
9 R. Burgess, "A software framework for model driven configuration and control of wireless baseband systems, "
10 M. R. Turner, "Software defined radio solutions a military radio perspective, "
11 C. Serra, E. Nicollet, and S. Martin, "Software radio architecture and waveform portability, "
12 "Authorization and use of software defined radio, " Federal Communications Commision Report, FCC01-264, 2001-9.
13 Y. Suzuki, K. Oda, R. Hidaka, H. Harada, T. Hamai, and T. Yokoi, "Technical
regulation conformity evaluation system for software defined radio," IEICE Trans. Commun., vol. E86-B, no. 12, pp. 3392-3400, 2003-12.
14 Y. Suzuki, H. Harada, K. Uehara, T. Fujii, Y. Yokoyama, K. Oda, and R. Hidaka, "Adaptability check during software installation in software defined radio," IEICE Trans. Commun., vol. E86-B, no. 12, pp. 3392-3400, 2003-12.
15 M. R. Turner, "Software defined radio solutions a military radio perspective,"
16 C. F. LAM, T. D. DOAN, K. SAKAGUCHI, J. ichi TAKADA, and K. ARAKI, "Implementation of radio security module in globally roaming sdr terminals," IEICE Software Radio Technical Report, SR03-04, 2003-6.
17 C. F. Lam, K. Sakaguchi, J. ichi Takada,, and K. Araki, "Radio security module that enables global roaming of sdr terminal while complying with local radio regulation," 2003 Fall IEEE Vehicular Technology Conference (VTC 2003 Fall), (Orlando, FL, USA), 2003-10.
18 K. Okuike, H. Uchikawa, K. Ikemoto, K. Umebayashi, and R. Kohno, "A framework using acs (automatic certification system) for software defined radio," IEICE Software Radio Technical Report, SR02-24, pp. 95-100, 2002-12.
19 K. Okuike, K. Umebayashi, and R. Kohno,"A regulatory framework using automatic certification system for software defined radio," 2003 Software Defined Radio Technical Conference and Product Exposition (SDR' 03), (Orlando, FL, USA), 2003-11.
20 K. Okuike, H. Uchikawa, K. Ikemoto, K. Umebayashi, and R. Kohno,"A study on on-board automatic certificating system (acs) for software defined radio," IEICE Software Radio Technical Report, SR02-10, pp. 7-13, 2002-7.
21 K. Okuike, H. Uchikawa, K. Ikemoto, K. Umebayashi, and R. Kohno,"On-board automatic certificating system (acs) for software defined radio," 2002 SDR Technical Conferece(SR02), San Diego(USA), pp. 103-106, 2002-11.
22 M. Togooch, K. Sakaguchi, J. ichi Takada, and K. Araki,"Automatic calibration unit (acu) and acu employed authorization procedure (amap) for sdr," SDRF-02-Ⅰ-0020-V0.00.
23 C. F. LAM, K. SAKAGUCHI, J. ichi TKADA, and K. ARAKI,"Implementation of radio security module for global software defined radios security architecture," IEICE Software Radio Technical Report, SR03-4, pp. 23-27, 2003-6.
24 杨小牛，楼才义，徐建良．软件无线电原理与应用．电子工业出版社，2001
25 Walter Zuttlebee．软件无线电技术与实现．电子工业出版社，2004
26 Jeffrey H．Need．软件无线电—无线电工程的现代方法．人民邮电出版社，200427 赵苏鉴，栗欣，姚彦．宽带软件无线电接收机解决方案．清华大学电子工程系，微波与数字通信国家重点实验室．
28 熊庆过．软件无线电技术的研究现状及关键技术．武汉科技大学．文章编号：1009-2552(2003)05-0097-02
29 骆骋，吴征，栗欣．软件无线电数字前端的一种新实现方法．无线通信技术．2000，第三期
30 杨留清，张闽申，徐菊英等编著．数字移动通信系统．人民邮电出版社，1995
31 William．H．Tranter等．通信系统仿真原理与无线应用．机械工业出版社，2005
32 飞思科技产品研发中心．MATLAB7辅助信号处理技术与应用．电子工业出版社，2005
33 陈晓毅，姚庆栋．软件无线电中的调制方式识别．中图分类号：TN911，文献标识码：A，文章编号：1003 8329(2001)04 0009 04
34 方惠英，赵民建，陈文正．基于软件无线电的突发模式8DPSK的全数字化实现．广东深圳深圳中兴通讯有限公司；浙江大学 信息与电子工程系．
35 杜琳．软件无线电实验平台的分析与设计[D]．北京航空航天大学，2000
36 王立宁，乐光新，詹菲．Matlab与通信仿真[M]．人民邮电出版社，2000
37 张常年，赵红怡，李飞．基于MATLAB的软件无线电．北方工业大学工学院．