多调制指数CPM信号的新分解方式及其准相干解调

doi:10.3969/j.issn.1001-506X.2020.11.25

系统工程与电子技术 ›› 2020, Vol. 42 ›› Issue (11): 2614-2619.doi: 10.3969/j.issn.1001-506X.2020.11.25

多调制指数CPM信号的新分解方式及其准相干解调

刘蒙蒙¹(), 王晓颖¹(), 余忠洋¹(), 丁兴文²(), 常洪雨²(), 白宝明¹()

1. 西安电子科技大学综合业务网理论及关键技术国家重点实验室, 陕西西安 710071
2. 北京遥测技术研究所, 北京 100094

收稿日期:2020-01-06 出版日期:2020-11-01 发布日期:2020-11-05
作者简介:刘蒙蒙(1996-),女,硕士研究生,主要研究方向为无线通信理论及编码调制。E-mail:betterlmm@163.com|王晓颖(1996-),女,硕士研究生,主要研究方向为无线通信理论及编码调制。E-mail:xiaoyingw@stu.xidian.edu.cn|余忠洋(1989-),男,博士研究生,主要研究方向为无线通信理论及编码调制。E-mail:844767740@qq.com|丁兴文(1983-),男,硕士,主要研究方向为航天遥测技术。E-mail:dingxw@brit.com.cn|常洪雨(1983-),女,硕士,主要研究方向航天遥测技术。E-mail:shiji916@163.com|白宝明(1966-),男,教授,博士研究生导师,主要研究方向为信道编码及无线通信。E-mail:bmbai@mail.xidian.edu.cn
基金资助:
国家自然科学基金(61771364);国家自然科学基金(61701368);空间测控通信技术联合创新实验室基金(201704A)

Decomposition and quasi-coherent demodulation of Multi-h CPM signal

Mengmeng LIU¹(), Xiaoying WANG¹(), Zhongyang YU¹(), Xingwen DING²(), Hongyu CHANG²(), Baoming BAI¹()

1. State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an 710071, China
2. Beijing Telemetry Technology Research Institute, Beijing 100094, China

Received:2020-01-06 Online:2020-11-01 Published:2020-11-05

摘要/Abstract

摘要：

针对卫星通信等资源受限的无线通信系统,研究了多调制指数连续相位调制(Multi-h continuous phase modulation, Multi-h CPM)信号的调制与解调相关问题。首先提出了一种新的分解方式来简化Multi-h CPM信号的调制过程,并给出了相应的周期性状态网格图。然后根据新的分解方式设计了一种适用于Multi-h CPM信号的导频辅助准相干解调算法,并从功率谱和误码性能两方面对所设计的Multi-h CPM信号和单调制指数CPM(Single-h CPM)信号进行了评估与比较。仿真结果表明:无论采用何种频率脉冲, Multi-h CPM信号都要比Single-h CPM信号具有更加光滑的功率谱曲线;仅两个导频符号辅助下,未编码Multi-h CPM系统较未编码Single-h CPM系统有将近2 dB的性能增益,且在低信噪比下,编码Multi-h CPM系统性能要比编码Single-h CPM系统好0.1~0.25 dB。

关键词: 单调制指数连续相位调制, 多调制指数连续相位调制, 导频辅助, 卫星通信

Abstract:

Considering resource-limited wireless communications such as satellite communications, the relevant problems of modulation and demodulation of multi-h continuous phase modulation (multi-h CPM) signals are studied. A new way of decomposition is first designed to simplify the modulation process of the multi-h CPM signals, followed by a periodic state trellis. Then, a pilot-aided quasi-coherent demodulation algorithm is proposed to detect the multi-h CPM signals according to the designed decomposition. Moreover, the multi-h CPM signals and the single-h CPM signals are evaluated and compared from the two aspects of power spectrum and bit error performance. Simulation results show that, no matter what frequency pulse is used, the multi-h CPM signals have smoother power spectrum curves than the single-h CPM signals; only with the assistance of two pilot symbols, the performance gain of the uncoded multi-h CPM system is nearly 2 dB compared with that of the uncoded single-h CPM system, and the coded multi-h CPM system can achieve performance gain of 0.1 dB to 0.25 dB more than the coded single-h CPM system at low signal-to-noise ratios (SNRs).

Key words: Single-h continuous phase modulation (CPM), Multi-h continuous phase modulation (CPM), pilot-aided, satellite communication

中图分类号:

TN911.23

刘蒙蒙, 王晓颖, 余忠洋, 丁兴文, 常洪雨, 白宝明. 多调制指数CPM信号的新分解方式及其准相干解调[J]. 系统工程与电子技术, 2020, 42(11): 2614-2619.

Mengmeng LIU, Xiaoying WANG, Zhongyang YU, Xingwen DING, Hongyu CHANG, Baoming BAI. Decomposition and quasi-coherent demodulation of Multi-h CPM signal[J]. Systems Engineering and Electronics, 2020, 42(11): 2614-2619.

图/表 7

表1

图1

图2

表2

图3

图4

图5

参考文献 26

1	GUNTURKUN U . Exploiting the fast spectral roll-off of CPM side lobes to improve bandwidth efficiency in satellite communications[J]. IEEE Communications Letters, 2017, 21 (7): 1461- 1464. doi: 10.1109/LCOMM.2017.2688451
2	XUE R , YU H , CHENG Q . Adaptive coded modulation based on continuous phase modulation for inter-satellite links of global navigation satellite systems[J]. IEEE Access, 2018, 6, 20652- 20662. doi: 10.1109/ACCESS.2018.2825255
3	XIAO Z , XIA P , XIA X . Enabling UAV cellular with millimeter-wave communication: potentials and approaches[J]. IEEE Communications Magazine, 2016, 54 (5): 66- 73. doi: 10.1109/MCOM.2016.7470937
4	上官泽胤. Multi-h CPM解调算法研究综述[J]. 电子测量技术, 2019, 42 (5): 60- 64.
	SHANGGUAN Z Y . Research on Multi-h CPM demodulation algorithm[J]. Electronic Measurement Technology, 2019, 42 (5): 60- 64.
5	RIMOLDI B . A decomposition approach to CPM[J]. IEEE Trans.on Information Theory, 1988, 34 (2): 260- 270. doi: 10.1109/18.2634
6	LAURENT P . Exact and approximate construction of digital phase modulations by superposition of amplitude modulated pulses (AMP)[J]. IEEE Trans.on Communications, 1986, 34 (2): 150- 160. doi: 10.1109/TCOM.1986.1096504
7	谢顺钦.低信噪比下Multi-h CPM的接收关键技术研究[D].北京:中国工程物理研究院, 2017.
	XIE S Q. Research on the key receiving technology of Multi-h CPM in low SNR[D]. Beijing: Chinese Academy of Engineering Physics, 2017.
8	SALEEM S , STUER G . Trellis termination of Multi-h CPM and the diophantine Frobenius problem[J]. IEEE Trans.on Communications, 2011, 59 (8): 2196- 2205.
9	SALEEM S , STUBER G . Frequency-domain equalization techniques for Multi-h continuous phase modulation[J]. IEEE Trans.on Communications, 2014, 62 (6): 1818- 1829. doi: 10.1109/TCOMM.2014.2316815
10	XIE T, WANG S L, ZHANG W, et al. Reduced-state sequence detection based on decision feedback for Multi-h CPM[C]//Proc.of the IEEE International Conference on Wireless Communication and Sensor Network, 2014: 138-142.
11	PERRINS E , RICE M . Reduced-complexity detectors for Multi-h CPM in aeronautical telemetry[J]. IEEE Trans.on Aerospace and Electronic Systems, 2007, 43 (1): 286- 300. doi: 10.1109/TAES.2007.357134
12	MAZZALI N , COLAVOLPE G , BUZZI S . CPM-based spread spectrum systems for multi-user communications[J]. IEEE Trans.on Wireless Communications, 2013, 12 (1): 358- 367. doi: 10.1109/TWC.2012.120412.120583
13	SHEN C H, LI B, BAI B M. Design of LDPC coded CPM over burst-error channels[C]//Proc.of the IEEE 83rd Vehicular Technology Conference (VTC Spring), 2016: 1-5.
14	沈春慧.突发错误信道中的Rateless编码连续相位调制系统研究[D].西安:西安电子科技大学, 2017.
	SHEN C H. Study on rateless coded continuous phase modulation over burst-error channels[D]. Xi'an: Xidian Universary, 2017.
15	OTHMAN R , SKRZYPCZAK A , LOUET Y . PAM decomposition of ternary CPM with duobinary encoding[J]. IEEE Trans.on Communications, 2017, 65 (10): 4274- 4284.
16	PEREZ A R , MICHEL R P , GARCIA A R , et al. A new Single-h and Multi-h CPM transmitter[J]. IEEE Trans.on Circuits and Systems I: Regular Papers, 2016, 63 (5): 716- 726. doi: 10.1109/TCSI.2016.2529282
17	BAHL L , COCKE J , JELINE F , et al. Optimal decoding of linear codes for minimizing symbol error rate[J]. IEEE Trans.on Information Theory, 1974, 20 (2): 284- 287.
18	FARES H , GLATTLI D , LOUET Y , et al. Power spectrum density of single side band CPM using Lorenztian frequency pulses[J]. IEEE Wireless Communications Letters, 2017, 6 (6): 786- 789. doi: 10.1109/LWC.2017.2742505
19	WANG B , CHEN P , FANG Y , et al. The design of vertical RS-CRC and LDPC code for ship-based satellite communications on-the-move[J]. IEEE Access, 2019, 7, 44977- 44986.
20	VILA-VALLS J , NAVARRO M , CLOSAS P , et al. Synchronization challenges in deep space communications[J]. IEEE Aerospace and Electronic Systems Magazine, 2019, 34 (1): 16- 27. doi: 10.1109/MAES.2019.170208
21	WANG F, LIU J, WANG S. LDPC code design for quadrature-quadrature phase shift keying[C]//Proc.of the IEEE 9th International Conference on Communication Software and Networks (ICCSN), 2017: 15-19.
22	白宝明, 孙成, 陈佩瑶, 等. 信道编码技术新进展[J]. 无线电通信技术, 2016, 42 (6): 1- 8.
	BAI B M , SUN C , CHEN P Y , et al. Recent progress in channel coding[J]. Radio Communications Technology, 2016, 42 (6): 1- 8.
23	LI H A , BAI B M , MU X J , et al. Algebra-assisted construction of quasi-cyclic LDPC codes for 5G new radio[J]. IEEE Access, 2018, 6, 50229- 50244. doi: 10.1109/ACCESS.2018.2868963
24	KSCHISCHANG F , FREY B , LOELIGER H . Factor graphs and the sum-product algorithm[J]. IEEE Trans.on Information Theory, 2001, 47 (2): 498- 519.
25	YANG P, CHEN J, CHAN Y, et al. A simplified addition operation Log-SPA LDPC decoder[C]//Proc.of the IEEE 14th Asia-Pacific Conference on Communications (APCC), 2008: 1-4.
26	CHO S , YANG K . A two-bit precision decoding algorithm for LDPC codes over the binary symmetric channel[J]. IEEE Wireless Communications Letters, 2019, 8 (1): 109- 112. doi: 10.1109/LWC.2018.2859993

CPM方案	频率脉冲函数
GMSK	${g(t) = \frac{1}{{2T}}\left\{ {Q\left[ {\frac{{t - T/2}}{{\sigma T}}} \right] - Q\left[ {\frac{{t + T/2}}{{\sigma T}}} \right]} \right\}}$
LREC	${g(t) = \left\{ {\begin{array}{*{20}{l}}{\frac{1}{{2LT}}, 0 \le t \le LT}\\{0, {\rm{其他}}}\end{array}} \right.}$
LRC	$g(t) = \left\{ {\begin{array}{*{20}{l}}{\frac{1}{{2LT}}\left( {1 - \cos \left( {\frac{{(2{\rm{ \mathsf{ π} }}t)}}{{LT}}} \right)} \right)}\\{0, {\rm{其他}}}\end{array}} \right., 0 \le t \le LT$

CPM方案	记忆长度L	符号集大小M	调制指数h	归一化3 dB带宽BT
GMSK	3	2	1/2	0.3
GMSK	3	2	[3/10, 7/10]	0.3
1REC	1	4	7/16	-
1REC	1	4	[2/8, 5/8]	-
3RC	3	4	5/16	-
3RC	3	4	[3/16, 7/16]	-

[1]	张嘉怡, 余忠洋, 朱敏, 白宝明, 刘为, 容琪龙. 低轨卫星通信中SCMA系统载波同步算法设计[J]. 系统工程与电子技术, 2021, 43(5): 1354-1360.
[2]	胡晓月, 康凯, 钱骅, 张舜卿. 基于LSTM的LEO卫星链路自适应算法[J]. 系统工程与电子技术, 2021, 43(1): 237-243.
[3]	廖向荣, 林敏, 刘笑宇, 孔槐聪, 李雄飞, 吴晓欢. 多用户卫星通信系统的中断性能分析[J]. 系统工程与电子技术, 2020, 42(9): 2123-2129.
[4]	田斌, 黄俊桦, 孙林海. 改进的低复杂度数字信道化器[J]. 系统工程与电子技术, 2018, 40(3): 652-657.
[5]	陈鹏, 畅志贤, 陈思宏, 李艺霞. 下行卫星认知无线电门限与功率联合优化[J]. 系统工程与电子技术, 2016, 38(9): 2162-2170.
[6]	王燕敏, 李博骁, 叶海军. 机载卫星通信波束受机身固定遮挡建模及仿真[J]. 系统工程与电子技术, 2016, 38(7): 1660-1665.
[7]	王桁, 吕智勇, 杨龙. DSSS卫星通信中基于小波包变换的干扰抑制方法[J]. 系统工程与电子技术, 2016, 38(6): 1417-1422.
[8]	李云，赵艳丽，赵为粮，王勇，刘期烈. 卫星通信中定时误差检测改进算法[J]. 系统工程与电子技术, 2014, 36(1): 149-154.
[9]	曾孝平，刘心迪，罗阳，陈礼，王志明，李梦如，邓波. 同步卫星多用户接入控制及切换的优化算法[J]. Journal of Systems Engineering and Electronics, 2013, 35(4): 840-846.
[10]	彭耿, 黄知涛, 姜文利, 周一宇. 卫星通信信号的多普勒频率参数盲估计[J]. 系统工程与电子技术, 2010, 32(4): 674-677.
[11]	彭耿, 黄知涛, 王丰华, 姜文利. 基于曲线拟合的卫星通信信号参数盲估计[J]. 系统工程与电子技术, 2010, 32(3): 450-453.
[12]	黄英, 雷菁. 卫星通信中调制识别算法研究[J]. Journal of Systems Engineering and Electronics, 2009, 31(6): 1303-1306.

多调制指数CPM信号的新分解方式及其准相干解调

Decomposition and quasi-coherent demodulation of Multi-h CPM signal

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 7

参考文献 26

相关文章 12

编辑推荐

Metrics

本文评价