OPTICAL LINK FOR RADIO SIGNAL TRANSMISSION,申请号JP19960020280-传众专利搜索

OPTICAL LINK FOR RADIO SIGNAL TRANSMISSION

申请公布号：JPH09215048(A)

申请号：JP19960020280

申请日期：1996.02.06

申请公布日期：1997.08.15

申请人：

NIPPON TELEGR & TELEPH CORP <NTT>

发明人：HORIKAWA KOJI;OGAWA HIROTSUGU

分类号：H01Q19/00;H01Q3/26;H01Q21/00;H04B10/00;H04W16/28;H04W92/12

主分类号：H01Q19/00

摘要：PROBLEM TO BE SOLVED: To enable the control of a phased array antenna at a radio base station through signal processing while keeping an optical wave as it is concerning a radio signal transmission optical link for transmitting the optical wave modulated by a radio signal between a radio distribution station and the radio base station having the phased array antenna. SOLUTION: From a radio distribution station 1 to radio base stations 21 -2i, an optical signal having plural wavelengths is modulated by the radio signal and concerning this modulated optical wave signal having the plural wavelengths, delay processing as the excitation distribution control of each antenna element is performed while keeping the optical wave as it is. This excitation distribution controlled optical signal is converted to an electric signal and this signal is distributed to each radiator. For reception, the optical wave is modulated by the radio signals, which are received at the radio base stations 21 -2i, and transmitted to the radio distribution station 1, signal processing is performed while keeping the optical wave as it is, and the excitation distribution applied to incidental equipment is extracted.