Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 23, Pages: 1-10
Abiodun Sholiyi 1 , Jafar A. Alzubi 2* , Omar A. Alzubi 2 , Omar Almomani 3 and Tim O'Farrell 4
1 Shaw Communications Inc., Calgary, Canada; [email protected]
2 Al-Balqa Applied University, Al-Salt, Jordan; [email protected], [email protected]
3 The World Islamic Sciences and Education University, Amman, Jordan; [email protected]
4 The University of Sheffield, Sheffield, UK; [email protected]
The purpose of this study is to construct a near capacity Irregular-Turbo Code (I-TC) and to evaluate its performance over Gaussian channel. The methodology used to evaluate and measure the performance of the new design is by simulating the system by developing a software platform using MATLAB. The simulation carried out by implementing the system over different modulation schemes, different frame sizes, and different code rates in order to achieve a fair comparison between irregular turbo code and regular Turbo Code (TC). The simulation results showed that the Irregular Turbo Code with 64QAM modulation is capable of achieving a coding gain of 1.29 dB over its corresponding Turbo Code for a low Bit Error Rate (BER) 10−5 , when used in a Gaussian noisy channel. Also, the Irregular Turbo Code designed in this paper, utilizes a single recursive Convolution encoder with short frame size of 5012 bits. The new designed codec can play an important role in many commercial applications such as Third-Generation (3G) wireless phones, Digital Video Broadcasting (DVB) systems, or Wireless Metropolitan Area Networks (WMAN), etc.
Keywords: Coding, Error Correction, Irregular Turbo Code, Iterative Decoding, Log-MAP, Turbo Code
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