NDLI: VSMC MIMO: A spectral efficient scheme for cooperative relay in cognitive radio networks

Content Provider	IEEE Xplore Digital Library
Author	Chao Kong Zengwen Yuan Xushen Han Feng Yang Xinbing Wang Tao Wang Songwu Lu
Copyright Year	2015
Description	Author affiliation: Sch. of EECS, Peking Univ., Beijing, China (Tao Wang) \|\| Dept. of Comput. Sci., Univ. of California, Los Angeles, Los Angeles, CA, USA (Songwu Lu) \|\| Sch. of Electron., Shanghai Jiao Tong Univ., Shanghai, China (Xinbing Wang) \|\| Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China (Chao Kong; Zengwen Yuan; Xushen Han; Feng Yang)
Abstract	Multiple-Input Multiple-Output (MIMO) technology has become an efficient way to improve the capacity and reliability of wireless networks. Traditional MIMO schemes are designed mainly for the scenario of contiguous spectrum ranges. However, in cognitive radio networks, the available spectrum is discontiguous, making traditional MIMO schemes inefficient for spectrum usage. This motivates the design of new MIMO schemes that apply to networks with discontiguous spectrum ranges. In this paper, we propose a scheme called VSMC MIMO, which enables MIMO nodes to transmit variable numbers of streams in multiple discontinuous spectrum ranges. This scheme can largely improve the spectrum utilization and meanwhile maintain the same spatial multiplexing and diversity gains as traditional MIMO schemes. To implement this spectral-efficient scheme on cooperative MIMO relays in cognitive radio networks, we propose a joint relay selection and spectrum allocation algorithm and a corresponding MAC protocol for the system. We also build a testbed by the Universal Software Radio Peripherals (USRPs) to evaluate the performances of the proposed scheme in practical networks. The experimental results show that VSMC MIMO can efficiently utilize the discontiguous spectrum and greatly improve the throughput of cognitive radio networks.
Starting Page	2137
Ending Page	2145
File Size	397371
Page Count	9
File Format	PDF
ISBN	9781479983810
DOI	10.1109/INFOCOM.2015.7218599
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-04-26
Publisher Place	Hong Kong
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Relays Cognitive radio Throughput Resource management Receivers Antennas
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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