Title :
High quality technologies for outage-free digital microwave radio
Author :
Okuno, Takao ; Nakamura, Yasuhisa ; Ohtsuka, Hiroyuki ; Komaki, Shozo
Author_Institution :
NTT Radio Commun. Syst., Lab., Tokyo, Japan
Abstract :
The authors outline the various technologies for achieving high-quality digital microwave radio relay systems. The needs, the research issues, and the current conditions are explained. The following technologies are discussed: robust modulation-demodulation technology, high-performance interference canceller, and automatic transmitting power control. In the future this technology will be applied to radio relay intervals across Japan which have severe fading, and it is anticipated that it will contribute to promoting digitalization and the higher quality of microwave routes
Keywords :
digital radio systems; microwave links; Japan; automatic transmitting power control; digital microwave radio; digital radio systems; fading; interference canceller; microwave routes; modulation-demodulation technology; outage free radio; radio relay systems; research; Circuits; Digital relays; Fading; Frequency; ISDN; Microwave devices; Microwave propagation; Microwave technology; Protective relaying; Synchronous digital hierarchy;
Conference_Titel :
Communications, 1991. ICC '91, Conference Record. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0006-8
DOI :
10.1109/ICC.1991.162354
