CDMA access networks using low-cost electronic techniques

Author

White, I.H. ; Ingham, J.D. ; Rosas-Fernandez, J.B. ; Penty, R.V.

Author_Institution

Dept. of Eng., Univ. of Cambridge, Cambridge

Volume

4

fYear

2008

fDate

22-26 June 2008

Firstpage

155

Lastpage

157

Abstract

This paper describes recent work on electronic CDMA encoding and decoding with particular application to optical access networks. Simple and flexible generation of CDMA codes using low-cost transversal filters is shown to allow Gb/s data rates for each user in a passive optical network. The benefits of single-wavelength operation, bidirectional transmission and reconfigurability are possible with a data rate of 1.25 Gb/s per user. This is achieved using 18 Gchip/s encoding and decoding, which represents an order of magnitude improvement relative to earlier demonstrations.

Keywords

code division multiple access; optical fibre subscriber loops; transversal filters; CDMA access networks; CDMA codes; bidirectional transmission; bit rate 1.25 Gbit/s; code division multiple access; electronic CDMA decoding; electronic CDMA encoding; low-cost electronic techniques; low-cost transversal filters; optical access networks; passive optical network; single-wavelength operation; Bragg gratings; Decoding; Fiber gratings; Finite impulse response filter; Multiaccess communication; Optical fiber networks; Optical filters; Optical pulse shaping; Passive optical networks; Transversal filters; access networks; code-division multiple access; passive optical networks; transversal filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks, 2008. ICTON 2008. 10th Anniversary International Conference on

Conference_Location

Athens

Print_ISBN

978-1-4244-2625-6

Electronic_ISBN

978-1-4244-2626-3

Type

conf

DOI

10.1109/ICTON.2008.4598757

Filename

4598757