A novel receiver in parallel combinatory spread spectrum communication systems with soft-PIC for E-education

Author

Bei-ming, Li ; Zheng, DOll ; Wen-chao, Zhang ; Lili, Guo

Author_Institution

Sch. of Inf. & Commun. Eng., Harbin Eng. Univ., Harbin, China

fYear

2011

fDate

27-29 Dec. 2011

Firstpage

333

Lastpage

336

Abstract

This paper presents a novel Soft Parallel Interference Cancellation (Soft-PIC) receiver in parallel combinatory spread spectrum (PC/SS). In the PC/SS system, multip1e pseudo-noise (PN) sequences are simultaneously transmitted out of a pre-assigned spreading sequence set. It is necessary for PC/SS to employ the Soft-PIC receiver in frequency selective fading channel as for saving hardware. In the proposed scheme, each correlator of the Soft-PIC receiver scheme cancels the interference from other PN sequences to determine the appearances of the correlative PN sequences or not by taking into account reliability information about the detected interference signals. Compared with conventional Maximum receiver scheme of PC/SS, the Soft-PIC receiver can reconstruct the interference signals more accurately and eliminate MAI of other transmitted PN sequences. The simulation results show that this novel Soft-PIC receiver scheme can achieve preferable system performance without increasing receiver complexity.

Keywords

Internet; computer aided instruction; distance learning; fading channels; interference suppression; radio receivers; radiofrequency interference; spread spectrum communication; MAI elimination; PC-SS system; correlative PN sequences; e-education; frequency selective fading channel; interference signals; multiple pseudonoise sequences; parallel combinatory spread spectrum communication systems; preassigned spreading sequence; soft parallel interference cancellation receiver; soft-PIC receiver; Complexity theory; Receivers; Spread spectrum communication; PC/SS; PIC Receiver; Spread Spectrum system; e-education;

fLanguage

English

Publisher

ieee

Conference_Titel

e-Education, Entertainment and e-Management (ICEEE), 2011 International Conference on

Conference_Location

Bali

Print_ISBN

978-1-4577-1381-1

Type

conf

DOI

10.1109/ICeEEM.2011.6137819

Filename

6137819