Wireless and mobile communications [electronic resource] : APOC 2001, Asia-Pacific optical and wireless communications, 12-15 November 2001, Beijing, China / Hequan Wu, Jari Vaario, chairs/editors ; organized by SPIE--the International Society for Optical Engineering [and others] ; sponsored by Credit Suisse First Boston (CSFB), Technology Group [and others] ; cooperating organizations, AOS--Australia[n] Optical Society [and others] ; supported by Telecom World (China) [and] Optronics (Japan).