Code Index Modulated Chaotic Ambient Backscatter Communication With Differential Walsh Codes - Details

author：

Li, Zhiwei (Li, Zhiwei.) ^[1] | Chen, Pingping (Chen, Pingping.) ^[2] (Scholars：陈平平) | Chen, Guotai (Chen, Guotai.) ^[3] | Fang, Yi (Fang, Yi.) ^[4]

Indexed by：

EI Scopus SCIE

Abstract：

This　letter　proposes　a　code　index　modulated　chaotic　ambient　backscatter　communication　(CIM-CAmBC)　over　Rayleigh　fading　channels.　In　this　system,　multiple　bits　of　the　backscatter　device　can　be　transmitted　in　a　radio　frequency　(RF)　source　symbol　by　using　CIM　technique.　Moreover,　we　design　a　differential　Walsh　code　matrix　for　CIM　at　the　backscatter　device　such　that　direct-link　interference　(DLI)　can　be　effectively　eliminated　at　the　reader　without　acquisition　of　channel　state　information　(CSI).　The　theoretical　error　performance　of　the　proposed　CIM-CAmBC　over　multipath　fading　channels　is　derived　and　then　verified　by　simulations.　The　results　demonstrate　that　the　proposed　system　can　outperform　the　conventional　DCSK-AmBC　and　CIM-DCSK-AmBC　by　more　than　3　dB　over　fading　channels.

Keyword：

ambient backscatter communications (AmBC) Backscatter bit error rate (BER) code index modulation Codes Differential chaos shift keying (DCSK) Fading channels Indexes Radio frequency Symbols Wireless sensor networks

Community：

[ 1 ] [Li, Zhiwei]Fuzhou Univ, Dept Elect Informat, Fuzhou 350116, Peoples R China
[ 2 ] [Chen, Pingping]Fuzhou Univ, Dept Elect Informat, Fuzhou 350116, Peoples R China
[ 3 ] [Chen, Guotai]Fujian Prov Univ, Fujian Polytech Normal Univ, Sch Elect & Mech Engn, Fuzhou 350300, Peoples R China
[ 4 ] [Chen, Guotai]Fujian Prov Univ, Fujian Polytech Normal Univ, Key Lab Nondestruct Testing, Fuzhou 350300, Peoples R China
[ 5 ] [Fang, Yi]Guangdong Univ Technol, Sch Informat Engn, Guangzhou 510006, Peoples R China