Interference detection for other systems using MIMO-OFDM signals

摘要：

　　This paper proposes an interference detection method in MIMO transmission, which utilizes periodical preamble signals in a frequency domain.In this paper, we assume the collision between the short preamble signal in WLAN system and interfering signal like a microwave oven.In the propose method, second antenna receives the signals while first antenna transmits the preamble signals.Hence, the interference can be detected by observing the subcarriers which are not mapped short preamble signal using the received signal after the FFT processing.Moreover, we utilize the dual polarized antennas to reduce the mutual coupling between the transmitter and receiver.By a computer simulation and measurement with the use of orthogonal polarized antenna, it is shown that the proposed method can successfully detect interference from the other system when the interfering power is greater than the noise power.

关键词： MIMO collision detection short preamble signals orthogonal polarized antenna

作者: Ryochi Kataoka Kentaro Nishimori Masaaki Kawahara Takefumi Hiraguri Hideo Makino

作者单位: Graduate School of Science and Technology, Niigata University,Ikarashi 2-nocho 8050, Nishi-ku Niigat Nippon Institute of Technology Ikarashi 2-nocho 8050, Nishi-ku Niigata-shi, 950-2181 Japan

会议类型: 国际会议

会议名称: 2013 International Symposium on Antennas and Propagation(2013天线与传播国际会议)

会议地点: 南京

会议语种:英文

页码: 207-210

在线出版日期: 2013-10-23（万方平台首次上网日期，不代表论文的发表时间）