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Esa Alghonaim

Assistant Professor

Faculty

علوم الحاسب والمعلومات
Building 31, 2nd floor, Office 2208
المنشورات
مقال فى مجلة
2010

A PLATFORM FOR LDPC CODE DESIGN AND PERFORMANCE EVALUATION

Alghonaim, Esa . 2010

LDPC codes parallel processing simulation iterative decoder SPA

​In this paper, the design and implementation aspects of a novel platform for aiding in the construction and

performance evaluation of Low Density Parity Check (LDPC) codes is presented. The proposed platform is capable

of performing two major tasks: (1) parallel simulation for evaluating LDPC codes performance in a very short time

compared to existing LDPC code simulation tools, and (2) displaying the internal state of LDPC decoder during

decoding iterations using a graphical user interface (GUI) which allows the LDPC code designer to visually inspect

the weak areas. The existing LDPC code simulation tools take a long time in evaluating the performance of a

specific LDPC code design, particularly in high SNR regions. This is due to the large number of computations

required. This problem is overcome by developing a parallel protocol to distribute the computations among

processing nodes in a TCP/IP network. As indicated by experimental results, the proposed simulation platform is

scalable with the number of processing nodes. Another practical advantage of the proposed system is that it does not

need dedicated processors; rather, it can utilize idle times of processing nodes in a network and work transparently to

any node user. Furthermore, network daemons are adopted in order to detect and utilize network nodes even if they

are in the log-off state. The second major task of the proposed platform is to analyze LDPC code performance and

inspect weak areas in a given LDPC code design. To meet this objective, a method is proposed to graphically display

the behavior of the LDPC decoder through the decoding iterations. This is then exploited to detect weak

constructions (such as failure “trapping loops”) that prevent the decoder from continuously improving the bit error

performance.

رقم المجلد
35
رقم الانشاء
2B
مجلة/صحيفة
The Arabian Journal for Science and Engineering
الصفحات
131 to 148
مزيد من المنشورات
publications

The paper presents a novel approach to reduce the bit error rate (BER) in iterative belief propagation (BP) decoding of low density parity check (LDPC) codes.

بواسطة Esa Alghonaim, Mohamed Adnan Landolsi, Aiman El-Maleh
2007
publications

​This paper presents a novel approach for the design and implementation of a simulation platform for evaluating LDPC codes performance. The existing LDPC code simulation tools consume very long…

بواسطة Esa Alghonaim, Aiman El-Maleh, Adnan Al-Andalusi
2007
publications

The paper presents a novel approach to increase the performance and/or throughput of iterative belief propagation (BP) decoding of low density parity check (LDPC) codes. The proposed approach is…

بواسطة Esa Alghonaim, Aiman El-Maleh, Adnan Al-Andalusi
2008