DocumentCode :
1457011
Title :
Wide-band millimeter-wave/optical-network applications in Japan
Author :
Imai, Nobuaki ; Kawamura, Hiroshi ; Inagaki, Keizo ; Karasawa, Yoshio
Author_Institution :
NTT Wireless Syst. Labs., Yokosuka, Japan
Volume :
45
Issue :
12
fYear :
1997
fDate :
12/1/1997 12:00:00 AM
Firstpage :
2197
Lastpage :
2207
Abstract :
This paper describes work on wide-band millimeter-wave (MMW)/optical-network applications in Japan-in particular, projects being pursued at the Advanced Telecommunications Research Institute (ATR). Digital-signal transmission at 118 Mb/s was tested. Results of the experiments demonstrate that highspeed digital-signal transmission, with a total carrier-to-noise ratio (C/N) degradation of less than 1.2 dB from a modem at a BER of 10-6, is feasible. Similarly, analog FM-signal transmission with a weighted S/N of more than 45 dB is also feasible at a signal bandwidth of 18 MHz and FM carrier frequency of 43.75 GHz. Based on these results, a demonstration system was constructed, and the feasibility of the system was confirmed. Several key technologies for system construction such as an MMW optical modulator and an MMW high-speed p-i-n detector and some related technologies are also described, In addition, an advanced system considered suitable for future high-speed mobile communications is proposed. This system employs an optical signal-processing multibeam antenna, where the direction of each sharp beam can be adaptively controlled
Keywords :
digital communication; mobile communication; multibeam antennas; optical fibre communication; optical information processing; optical modulation; p-i-n photodiodes; 118 Mbit/s; 18 MHz; 43.75 GHz; Advanced Telecommunications Research Institute; BER; FM carrier frequency; analog FM-signal transmission; digital-signal transmission; high-speed mobile communications; high-speed p-i-n detector; millimeter-wave/optical-network applications; multibeam antenna; optical modulator; signal bandwidth; total carrier-to-noise ratio degradation; Bandwidth; Bit error rate; Degradation; High speed optical techniques; Millimeter wave communication; Millimeter wave technology; Modems; Optical modulation; Testing; Wideband;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/22.643816
Filename :
643816
Link To Document :
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