Title :
Experimental evaluation of the optimum decision threshold for varying numbers of active users in a 2D t-λ, asynchronous O-CDMA system
Author :
Saghari, P. ; Gholizadeh, R. ; Abrishami, H. ; Pakbaznia, E. ; McGeehan, J.E. ; Motaghian, R. ; Willner, R.E.
Author_Institution :
Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We experimentally demonstrate that tuning the decision threshold in an O-CDMA receiver to an optimal point based on the active-user-count improves receiver sensitivity by >3-dB, and demonstrate an active-user-count monitoring technique, allowing dynamic threshold adjustment.
Keywords :
code division multiple access; optical fibre networks; optical receivers; optical transmitters; active-user-count monitoring technique; asynchronous O-CDMA system; dynamic threshold adjustment; optical-CDMA receiver; optimum decision threshold; Autocorrelation; Bit error rate; Decoding; Monitoring; Optical fiber networks; Optical receivers; Optical sensors; Optical transmitters; Power system harmonics; Radio frequency;
Conference_Titel :
Lasers and Electro-Optics, 2005. (CLEO). Conference on
Print_ISBN :
1-55752-795-4
DOI :
10.1109/CLEO.2005.202071
