发明名称 |
Metod och anordning för mätning av optisk signalkvalitet hos WDM-kanaler |
摘要 |
Optical signal quality is measured using a method comprising the following steps : (a) transmitting a test signal via the channel whose optical signal quality is to be measured ; (b) generating a reference signal ; (c) drawing off the transmitted signal and combining it with the refence signal at essentially the same location ; (d) converting the test and reference signals ; (e) detecting comparable signal sections in the respective signals ; (f) synchronising the signals ; (g) comparing the test and reference signals ; (h) adapting signal performance for the test and reference signals ; (i) generating a signal difference by subtracting the adapted test and reference signals ; and (j) providing an output value representing the effect of the channel on signal quality. An Independent claim is also included for the device used to carry out this method. |
申请公布号 |
SE0100894(L) |
申请公布日期 |
2002.09.10 |
申请号 |
SE20010000894 |
申请日期 |
2001.03.15 |
申请人 |
TELIA AB |
发明人 |
SVENSSON TORBJOERN |
分类号 |
G01M11/00;H04B;H04B10/077;(IPC1-7):H04B10/08 |
主分类号 |
G01M11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|