Title :
Modified legendre sequences for optical CDMA-based passive optical networks
Author_Institution :
Dept. of Electron. Eng., Kun Shan Univ., Tainen, Taiwan
fDate :
5/1/2006 12:00:00 AM
Abstract :
One spectral-amplitude-coding optical code-division multiple access system is presented for passive optical networks. With the cyclic property of arrayed-waveguide grating (AWG) routers and the partially cyclic property of the proposed modified Legendre sequence, the central office needs two AWG routers and one fiber Bragg grating to generate each user´s normal and complementary codewords. Thus complementary encoding is accomplished with a cheap and simple configuration, allowing for low-power asynchronous transmission.
Keywords :
Bragg gratings; Legendre polynomials; arrayed waveguide gratings; code division multiple access; cyclic codes; optical fibre networks; passive networks; spectral analysis; telecommunication network routing; AWG router; OCDMA; arrayed-waveguide grating; asynchronous transmission; encoding; fiber Bragg grating; modified legendre sequence; optical code-division multiple access system; passive optical network; spectral-amplitude coding; Arrayed waveguide gratings; Central office; Chaos; Encoding; Multiaccess communication; Multiple access interference; Optical fiber networks; Optical noise; Passive optical networks; Phase noise;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2006.1633334
