Please use this identifier to cite or link to this item:
Title: TDCS-IDMA system for cognitive radio networks with cloud
Authors: Hu, Su
Li, Fan
Guo, Huiting
Wang, Pei
Bi, Guoan
Gao, Yuan
Liu, Zilong
Yu, Bin
Keywords: Cloud Computing
Cognitive Radio
Issue Date: 2018
Source: Hu, S., Li, F., Guo, H., Wang, P., Bi, G., Gao, Y., et al. (2018). TDCS-IDMA system for cognitive radio networks with cloud. IEEE Access, 6, 20520-20530.
Series/Report no.: IEEE Access
Abstract: Cognitive radio (CR) is a novel technology for improving the utilization of radio electromagnetic spectrum. Recently, a new model called cognitive radio networks with cloud (CRNC) has been proposed to eliminate the constraints (pertinent to traditional CR) on power, memory space, and computational capacity. To enable multiple access of CRNC system, orthogonal frequency division multiplexing-interleave division multiple access (OFDM-IDMA) has been investigated. Traditional OFDM-IDMA may not be applied to CRNC in a straightforward manner. This is because the spectral nulling in CR and the subsequent spectral sensing mismatch (between CR transmitter and receiver) could lead to unacceptable data error performance. This paper presents a new multiple access communication system, called transform domain communication system IDMA communication system, to deal with spectral nulling problems. Two improved schemes based on BPSK and cyclic code shift keying modulations are proposed. The proposed system structure integrates the advantages of both OFDM-IDMA and CRNC, which can make full use of other users' information while satisfying CR constraints. Simulation results demonstrate that the two proposed system architectures can achieve significant improvement on BER performance, multiple access capability, and anti-interference ability with spectral nulling.
DOI: 10.1109/ACCESS.2018.2825223
Rights: © 2018 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See for more information
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

Files in This Item:
File Description SizeFormat 
TDCS-IDMA system for cognitive radio networks with cloud.pdf1.18 MBAdobe PDFThumbnail

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.