Title :
Techniques to improve the performance of wireless LAN under ISM interference environments
Author :
Unawong, Sakda ; Miyamoto, Shinichi ; Morinaga, Norihiko
Author_Institution :
Graduate Sch. of Eng., Osaka Univ., Japan
Abstract :
It is well known that wireless local area networks (WLANs), operating in industrial, scientific and medical bands (900 MHz, 2400 MHz, and 5700 MHz ), can be seriously affected by electromagnetic interference radiated from ISM apparatus. In this paper, to improve the bit error performance of a direct-sequence spread-spectrum (DS-SS) system which is employed, in an ISM-band WLAN under ISM interference environments, we propose a multicode transmission technique and a method to observe ISM interference. Computer simulation results demonstrate that the DS-SS system employing the proposed techniques can obtain a good performance even in the presence of ISM interference.
Keywords :
error statistics; radiofrequency interference; spread spectrum communication; wireless LAN; 2400 MHz; 5700 MHz; 900 MHz; DS-SS system; ISM apparatus; ISM interference environments; ISM-band WLAN; SHF; UHF; WLAN; bit error performance; computer simulation results; direct-sequence spread-spectrum; industrial band; medical band; multicode transmission; performance; radiated electromagnetic interference; scientific band; wireless LAN; wireless local area networks; Additive noise; Background noise; Computer errors; Electromagnetic heating; Electromagnetic interference; Electromagnetic radiation; Electromagnetic radiative interference; Microwave ovens; Wireless LAN; Wireless communication;
Conference_Titel :
Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference
Conference_Location :
Beijing, China
Print_ISBN :
7-5635-0402-8
DOI :
10.1109/APCC.1999.825024
