Coded Cooperative Scheme Based Punctured Convolutional Coding

Recently, cooperative communication has been proposed to provide diversity, thereby improving the performance of wireless networks. Cooperative communication takes advantage of broadcast nature of wireless channel to form virtual MIMO system, and thereby provides diversity and fights against fading. The performance of cooperative system is further enhanced by associating it with convolution coding. Coded cooperation is a mechanism where cooperation is combined with and operates through channel coding. In this paper, first we have shown that cooperative system is better than non-cooperative. Then, we have compared the performance of amplify-and-forward (AF) and Decode-and-forward (DF) scheme. Thereafter, we considered coded cooperation scheme and shown that compared to amplify-and-forward (AF) and Decode-and-forward (DF), the coded cooperative scheme outperforms in terms of better BER performance. Further, we have design and simulated coded cooperative scheme with punctured convolutional coding and have investigate the system performance of punctured convolutional codes, with cooperative transmission schemes. Here as compared to Non-cooperative communication, AF gives us the gain of approximately 4 dB, coded cooperation gives the gain of 3 dB as compared to AF. Finally the AF with Punctured convolutional coding is compared with uncoded AF and AF with convolutional coding and the simulated results shows that it outperforms the other two and gives gain of almost 3 dB.