Authors: Toshihiko Wakahara, Meng Yao, Kamugisha Kazaura, Tetsuji Yamato, Hideyuki Ohara, Mitsuji Matsumoto, Takao Shimizu
Addresses: Department of Information and Communication Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan. ' Huawei Technologies Japan K.K., Otemachi First Square West Tower 10F, 1-5-1 Otemachi, Chiyoda-ku Tokyo 100-0004. ' Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo shinjuku, Tokyo , 169-8555 Japan. ' Omron Engineering Corp., Tokyo, Japan. ' Omron Engineering Corp., Tokyo, Japan. ' School of Global Information and Telecommunication Studies, Waseda University, 1-3-10 Nishi-Waseda, Shinjuku-ku, Tokyo 169-0051, Japan. ' Unmanned and Innovative Aircraft Team, Japan Aerospace Exploration Agency, 6-13-1 Osawa, Mitaka city, Tokyo 181-0015, Japan
Abstract: We present the design concept of a campus network based on 60 GHz wireless links suitable for distance learning application and propose a new voice objective measurement method of Voice over IP (VoIP). A practical and convenient network design method for the 60 GHz wireless campus LAN is outlined. For the voice quality measurements a subjective evaluation by human Mean Opinion Score (MOS) is considered the best evaluation, although it has its drawbacks including costs and time for arranging such tests. A new objective measurement method is presented which simplifies the measurement for voice quality and the validity of the proposed method is confirmed by experiments.
Keywords: 60 GHz wireless; campus networks; voice quality; voice over IP; VoIP measurement; personal handy phone system; PHS; objective evaluation; subjective evaluation; distance learning; network design.
International Journal of Wireless and Mobile Computing, 2008 Vol.3 No.1/2, pp.91 - 100
Published online: 25 Jul 2008 *Full-text access for editors Access for subscribers Purchase this article Comment on this article