Title :
CNR estimation under man-made radio noise environment and its application to noise reduction technique using sector antenna
Author :
Miyamoto, Shinichi ; Yoshizawa, Kensuke ; Morinaga, Norihiko
Author_Institution :
Dept. of Commun. Eng., Osaka Univ., Japan
fDate :
6/21/1905 12:00:00 AM
Abstract :
Man-made noise emitted from Industrial, Scientific and Medical (ISM) apparatus is known to be one of the major causes of errors in ISM-band wireless Local Area Network (LAN) systems. Although many kinds of countermeasures to improve the performance of ISM-band wireless LAN systems have been proposed, most of these countermeasures are required to estimate the statistical characteristics of man-made noise in advance. In this paper, as the basic parameter characterizing the statistics of of man-made noise the received Carrier to Noise power Ratio (CNR) is employed, we discuss the CNR estimation under man-made noise environment. Moreover, CNR estimation is applied to noise reduction technique using angle diversity reception with sector antenna, and the improvement in bit error rate performance is evaluated
Keywords :
diversity reception; interference suppression; radiofrequency interference; wireless LAN; ISM band; angle diversity reception; bit error rate; carrier to noise power ratio; man-made radio noise environment; noise reduction; sector antenna; statistical model; wireless local area network; Bit error rate; Diversity reception; Electromagnetic scattering; Local area networks; Noise reduction; Quadrature phase shift keying; Radio frequency; Signal to noise ratio; Wireless LAN; Working environment noise;
Conference_Titel :
Microwave Conference, 1999 Asia Pacific
Print_ISBN :
0-7803-5761-2
DOI :
10.1109/APMC.1999.828082
