By Topic

A new bandwidth efficient scheme for applying error-correcting codes in fiber-optic CDMA systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
P. Azmi ; Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran ; M. Nasiri-Kenari ; J. A. Salehi

In this paper, we consider using practical low-rate error-correcting codes in fiber-optic code division multiple-access (CDMA) communication systems. To this end, a new method of low-rate channel coding is proposed. As opposed to the conventional coding schemes, this method does not require any further bandwidth expansion for error correction. The low-rate channel codes that are used for demonstrating the capabilities of the proposed method, are super orthogonal codes (SOC). These codes are near optimal and have a relatively low complexity. We evaluate upper bounds on the bit error probability of the proposed coded system assuming both on-off keying and binary pulse position modulation schemes. It is shown that the proposed method significantly outperforms the uncoded systems for various receiver structures such as a correlator with and without hard-limiter and chip-level detector. Furthermore, the performance of the proposed method is also evaluated in the presence of different values of dark current.

Published in:

Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on  (Volume:2 )

Date of Conference:

2-5 Sept. 2002