Interference Minimization Approach to Precoding Scheme in MIMO-Based Cognitive Radio Networks

Author

Jung, Minchae ; Hwang, Kyuho ; Choi, Sooyong

Author_Institution

Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

15

Issue

8

fYear

2011

fDate

8/1/2011 12:00:00 AM

Firstpage

789

Lastpage

791

Abstract

A precoding scheme based on the interference minimization is proposed for an interference-limited communication system such as multiple-input multiple-output (MIMO)-based cognitive (CR) networks. The proposed precoder is to maximize the sum capacity through the minimization of interference power. By selecting a channel with the minimum singular value of the interference channel, the transmitter with the proposed precoder sends the information signals through the channel which produces the minimum interference in the system. Simulation results show that the proposed precoding scheme has the best performance in terms of the sum capacity in a MIMO-based CR network.

Keywords

MIMO communication; cognitive radio; interference suppression; precoding; radio networks; radio transmitters; radiofrequency interference; wireless channels; MIMO-based cognitive radio network; interference channel; interference minimization approach; interference-limited communication system; minimum singular value; multiple-input multiple-output-based CR network; precoding scheme; sum capacity; sum capacity maximization; transmitter; Interference channels; Minimization; Radio transmitters; Receivers; Strontium; Transmitting antennas; Cognitive radio; MIMO; interference; precoding;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.11.110774

Filename

5934669