On the performance of MSOVA for UMTS and cdma2000 turbo codes

Dissertant

Musif, Hani Hashim

Thesis advisor

Ghanim, Wasil

Comitee Members

al-Kafri, Wasfi
Salih, Muhammad

University

Birzeit University

Faculty

Faculty of Engineering and Technology

Department

Department of Computer Science

University Country

Palestine (West Bank)

Degree

Master

Degree Date

2007

English Abstract

Turbo codes are one of the most important channel coding schemes because of its excellent performance that approaches Shannon limit.

So it is adopted by most of the modern digital communication systems.

These codes are either a parallel or serial concatenation of two or more convolutional encoders separated by interleaves.

There are two main decoding algorithms for turbo codes ; the MAP and SOVA algorithms.

The MAP algorithm has a very good performance but with large complexity, while the SOVA algorithm is simpler but with worse performance.

So many medications appeared for both algorithms.

Recently, a medication to the conventional SOVA algorithm called Modeled SOVA or MSOVA was proposed, which suggests adding two scaling factors to the output of the conventional SOVA decoder.

In this research, the performance of the MSOVA decoding algorithmic studied for the turbo codes used by the two third generation cellular standards; UMTS and cdma2000, where the best values of the two scaling factors of the MSOVA algorithm suitable for these turbo codes are found.

Main Subjects

Telecommunications Engineering

Topics

• Computer software

No. of Pages

63

Table of Contents

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-303493