Title :
Analysis and measurement of effects of SCM technique in WLL systems
Author :
Ogasawara, Mamoru ; Kagami, Osamu ; Ichikawa, Hirofumi
Author_Institution :
NTT Access Network Syst. Labs., Ibaraki, Japan
Abstract :
We are studying the application of a subcarrier multiplexing (SCM) transmission technique to the wireless local loop (WLL). In this paper, the signal-level compression (SLC) method is proposed, which can be used to extend the optical transmission length or increase the number of multiplexed subcarriers on an optical fiber. The theoretical analysis of this method is described and the validity of the analysis is experimentally clarified. The results show that the number of subcarriers increases eightfold and the permissible optical transmission loss is improved by 10 dB when the level compression gain is 20 dB. As a result, the accuracy of the theoretical analysis and the effectiveness of the proposed SLC method are experimentally confirmed
Keywords :
data compression; optical fibre losses; optical fibre subscriber loops; radio access networks; subcarrier multiplexing; 20 dB; SCM transmission technique; WLL systems; experiment; level compression gain; measurement; multiplexed subcarriers; optical fiber; optical transmission length; optical transmission loss; signal-level compression method; subcarrier multiplexing; wireless local loop; Degradation; Electronic mail; Intelligent networks; Laboratories; Modems; Optical fiber cables; Optical fibers; Optical losses; Optical transmitters; Telephony;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776590
