采用可穿戴圆极化天线的离体信道特性建模与分集接收方法

doi:10.11959/j.issn.2096-3750.2018.00051

Abstract

Abstract:

An anti-fading diversity receiving approach to body-area communications was proposed.A pair of opposite-sense called planar endfire circularly polarized antennas (PECPA) was employed to implement the receiving approach.The wide beamwidth CP characteristic of the PECPA was used to mitigate the height-dependent fadings.Antenna designs and body-area propagation measurements were performed at 5.8 GHz-band.An off-body channel model was established,and a channel simulator was accordingly developed.All results were compared to the cases using linearly polarized (LP) antennas diversity on equal conditions.The results show that the equal-gain-combination (EGC) signal levels for CP diversity reception are 2.1 dB greater than the LP one (with polarization mismatching loss removed).The rootmean-square delay spread (RDS) and number of multi-path component (MPC) can be significantly reduced.In addition,the simulated bit error rate (BER) of the body-area communication system using CP diversity can be improved by one order of magnitude compared the LP diversity one.The correctness and effectiveness of the proposed approach has been evidently validated by the experimental and simulated results.

Key words: planar endfire circularly polarized antenna (PECPA), wearable antenna, off-body channel, diversity reception,anti-fading

CLC Number:

TN820

Wenjun LYU,Pengfei CUI,Hongbo ZHU. Off-body channel modelling and diversity reception approach using wearable circularly polarized antenna[J]. Chinese Journal on Internet of Things, 2018, 2(2): 41-48.

Figures/Tables 12

References 32

[1]	BURG A , CHATTOPADHYAY A , LAM K T . Wireless communication and security issues for cyber-physical systems and the Internet-of-Things[J]. Proceedings of the IEEE, 2018,106(1): 38-60.
[2]	KIM M , TAKADA J , CHANG Y ,et al. Large-scale characteristics of urban cellular wideband channels at 11 GHz[C]// European Conference on Antennas and Propagation (EuCAP). 2015: 1-4.
[3]	CAO H , LEUNG V , CHOW C ,et al. Enabling technologies for wireless body area networks:a survey and outlook[J]. IEEE Communications Magazine, 2009,47(12): 84-93.
[4]	HALL P S , RICCI M , HEE T M . Measurements of on-body propagation characteristics[C]// IEEE APS/URSI Antennas and Propagation Symposium. 2002: 310-313.
[5]	ALOMAINY A , HAO Y , HU X ,et al. UWB on-body radio propagation and system modelling for wireless body-centric networks[J]. IEEE Proceedings Communications, 2006,153(1): 107-114.
[6]	FORT A , RYCKAERT J , DESSET C ,et al. Ultra-wideband channel model for communication around the human body[J]. IEEE Journal on Selected Areas in Communications, 2006,24(4): 927-933.
[7]	AMBROZIAK S J , CORREIA L M , KATULSKI R J ,et al. An off-body channel model for body area networks in indoor environments[J]. IEEE Transactions on Antennas Propagation, 2016,64(9): 4022-4035.
[8]	GARCIA-SERNA R G , GARCIA-PARDO C , MOLINA-GARCIAPARDO J M ,et al.Effect of the receiver attachment position on ultra-wideband off-body channels[J]. IEEE Antennas Wireless Propagation Letters, 2015,14: 1101-114.
[9]	ALI A J , COTTON S L , SCANLON W G . Spatial diversity for off-body communications in an indoor populated environment at 5.8 GHz[C]// Antennas and Propagation Conference. 2009: 641-644.
[10]	COTTON S L , SCANLON W G . Measurements,modeling and simulation of the off-body radio channel for the implementation of body worn antenna diversity at 868 MHz[J]. IEEE Transactions on AntennasPropagation, 2009,57(12): 3951-3961.
[11]	WANG Y , LU W J , ZHU H B . Propagation characteristics of the LTE indoor radio channel with persons at 2.6 GHz[J]. IEEE Antennas Wireless Propagation Letters, 2013,12: 991-994.
[12]	GARCIA-SERNA R G GARCIA-PARDO C MOLINA-GARCIAPARDO J M . Effect of the receiver attachment position on ultra-wideband off-body channels[J]. IEEE Antennas Wireless Propagation Letters, 2015,14: 1101-1104.
[13]	CUI P F , YU Y , LU W J ,et al. Measurement and modeling of wireless off-body propagation characteristics under hospital environment at 6-8.5 GHz[J]. IEEE Access, 2017,5: 10915-10923.
[14]	YU Y , LIU Y , LU W J ,et al. Path loss model with antenna height dependency under indoor stair environment[J]. International Journal of Antennas and Propagation, 2014,2014(6): 1-6.
[15]	LIU Y , YU Y , LU W J ,et al. Antenna-height-dependent path loss model and shadowing characteristics under indoor stair environment at 2.6 GHz[J]. IEEE Transactions on Electrical and Electronic Engineering, 2015,10(5): 498-502.
[16]	YU Y , LIU Y , LU W J ,et al. Antenna-height dependent delay spread model under indoor stair environment for small cell deployment in future mobile communications[J]. IEEE Transactions on Electrical and Electronic Engineering, 2015,10(S1): S7-S13.
[17]	YU Y , CUI P F , LU W J ,et al. Off-body radio channel impulse response model under hospital environment:measurement and modeling[J]. IEEE Communications Letters, 2016,20(11): 2332-2335.
[18]	YU Y , LIU Y , LU W J ,et al. Propagation model and channel simulator under indoor stair environment for machine-to-machine applications[C]// Asia Pacific Microwave Conference (APMC). 2016: 1-3.
[19]	SUN S , MACCARTNEY G R , RAPPAPORT T S . A novel millimeter-wave channel simulator and applications for 5G wireless communications[C]// IEEE International.Conference Communications (ICC). 2017: 1-5.
[20]	GEORGIOU O . Polarized rician fading models for performance analysis in cellular networks[J]. IEEE Communications Letters, 2016,20(6): 1255-1258.
[21]	JIANG Z H , CUI Z , YUE T ,et al. Compact,highly efficient,and fully flexible circularly polarized antenna enabled by silver nanowires for wireless body-area networks[J]. IEEE Transactions on Biomedical Circuits and Systems, 2017,11(4): 920-932.
[22]	JIANG Z H , GREGORY M D , WERNER D H . Design and experimental investigation of a compact circularly polarized integrated filtering antenna for wearable biotelemetric devices[J]. IEEE Transactions on Biomedical Circuits and Systems, 2016,10: 328-338.
[23]	LU W J , SHI J W , TONG K F ,et al. Planar end-fire circularly polarized antenna using combined magnetic dipoles[J]. IEEE Antennas Wireless Propagation Letters, 2015,14: 1263-1266.
[24]	ZHANG W H , LU W J , TAM K W . A planar end-fire circularly polarized complementary antenna with beam in parallel with its plane[J]. IEEE Transactions on Antennas and Propagation, 2016,64(3): 1146-1152.
[25]	XUE B , YOU M , LU W J ,et al. Planar endfire circularly polarized antenna using concentric annular sector complementary dipoles[J]. International Journal of RF and Microwave Computer-Aided Engineering, 2016,26(9): 829-838.
[26]	YOU M , LU W J , XUE B ,et al. A novel planar endfire circularly polarized antenna with wide axial ratio beamwidth and wide impedance bandwidth[J]. IEEE Transactions on Antennas and Propagation, 2016,6(10): 4554-4559.
[27]	RAPPAPORT T S HAWBAKER D A . Wide-band microwave propagation parameters using circular and linear polarized antennas for indoor wireless channels[J]. IEEE Transactions on Communications, 1992,40(2): 240-245.
[28]	CUI P F , LU W J , YU Y ,et al. Off-body spatial diversity reception using circular and linear polarization:measurement and modeling[J]. IEEE Communications Letters, 2018,22(1): 209-212.
[29]	薛白 . 穿戴式平面圆极化天线分集接收方法的研究[D]. 南京:南京邮电大学, 2017.
	XUE B . Study on method of diversity reception with wearable planar circularly polarized antennas[D]. Nanjing:Nanjing University of Posts and Telecommunications, 2017.
[30]	ALTMAN F , SICHAK W . A simplified diversity communication system for beyond-the-horizon links[J]. IRE Transactions on Communications Systems, 1956,4(1): 50-55.
[31]	BRENNAN D G ，Linear diversity combining techniques[J]. Proceedings of the IEEE, 2003,91(2): 331-359.
[32]	RAPPAPORT T S. . Wireless communications:principles and practice,upper saddle river,NJ:prentice.hall[M]. Chichester: Horwood Publishing Limited ChichesterPress, 2002.

Metrics

Recommended 0

No Suggested Reading articles found!

方案	特性	分布类型	位置参量	形状参量
	时延扩展	莱斯分布	S=7.02	δ=4.10
	多径数目	威布尔	λ=25.4	k=2.32
圆极化CP	相干带宽	对数正态	μ=3.37	δ=0.77
	信号强度	威布尔	λ=67.9	k=21.7
	平均时延	威布尔	λ=27.5	k=3.18
	时延扩展	莱斯分布	S=10.1	δ=5.93
	多径数目	威布尔	λ=27.8	k=2.45
线极化PIFA	相干带宽	对数正态	μ=3.25	δ=0.73
	信号强度	威布尔	λ=69.2	k=14.5
	平均时延	威布尔	λ=28.5	k=3.25
	时延扩展	莱斯分布	S=12.8	δ=4.36
	多径数目	威布尔	λ=31.8	k=2.65
线极化Patch	相干带宽	对数正态	μ=3.01	δ=0.64
	信号强度	威布尔	λ=73.9	k=23.0
	平均时延	威布尔	λ=29.9	k=3.27

Off-body channel modelling and diversity reception approach using wearable circularly polarized antenna

RichHTML

PDF下载

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 12

References 32

Related Articles 1

Metrics

Recommended 0