Performance Analysis for Concatenated Coding schemes with Efficient Modulation Techniques
Hala M. A. Mansour1, Labib Francis Gergis2, Mostafa A. R. Eltokhy3, Hoda Z. Said4

1Prof. Hala M. A. Mansour, Electronics &Communications Dept, Shoubra Faculty of Engineering Benha University, Egypt.
2As. Prof. Labib Francis Gergis, Misr Academy for Engineering and Technology, Mansoura, Egypt.

3As. Prof. Mostafa A. R. Eltokhy, Electronics Technology Dept, Education College, Helwan University, Egypt.
4Hoda Z. Said, Ass. Lecturer, Workers University, Zagazig, Egypt.
Manuscript received on January 13, 2012. | Revised Manuscript received on February 02, 2012. | Manuscript published on March 05, 2012. | PP: 63-68 | Volume-2 Issue-1, March 2012. | Retrieval Number: A0379012111/2012©BEIESP
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Abstract: in digital communication systems, channel coding is the method of adding redundancy to the data in order to reduce the frequency of errors or to increase the capacity of a channel. Concatenated codes are the most superior class of codes making achievable channel capacity almost at par with the Shannon limits. Concatenated codes are error correcting codes constructed by combining two or more simple codes through an interleaver in order to obtain powerful coding schemes. In this paper a special construction of concatenated convolutional coding scheme called parallel-serial concatenated convolutional code (P-SCCC) is presented. The upper bound to the bit error probability of the proposed code is evaluated. Results showed that the error performance of this proposed code scheme is better than that of both classical serial and parallel concatenated convolutional codes. The performance of the proposed code has been studied with different types of digital modulation schemes.
Keywords: Code concatenation, convolutional code, frequency shift keying, phase shift keying, and quadrature amplitude modulation.