Journal of Innovative Research and Development Vol.-1, Issue-1, 2016, pp.16-19 Copyright©2016, JIRD PUBLICATION Page | 16 A Review Proposal on Real Time Communication System Based on Various kind of Feedback with and without Noisy Channel Narender Kumar,Dheeraj Sharma Department of Electronics and Communication Engineering Natraj Polytechnic College,India Abstract— In this paper we describe a real time communication system with feedback noise channel and without noise. Our model consist of source, forward and backward channel (memory less) and receiver with memory. Our main focus is to model a communication strategy which is reduced the distortion in a finite horizon. In this paper we describe the mathematical formulation which shows the communication strategy. Here we provide sequential method for source encoding and decoding for RT communication with feedback containing noise. For a efficient communication encoding of encoder and decoder, feedback should be done in real time. Keywords— Real Time,Delay,Encoder ,Decoder,Communication,Noiseless ,Channel. I. INTRODUCTION The classical communication system does not take the communication delay in the analysis. For example may sector like wireless sensor network, transportation system, medical devices and network controlled system, in which communication system is small part of the large system. In those cases the transmission delay is bounded. When we transmitted signal and with hard analysis we calculate the communication delay. Then those types of system is referred as real time system. And the communication is called real time communication (RTC) [1]. Real time communication problems are very different and complex than traditional communication system. In which we analysis the entropy and channel capacity of system, does not help to provide any information in real time communication. Due to real time difficulty the source and channel coding is no longer optimal. So for the real time system joint coding technique is considered for source and channel. In real time communication the main analysis is done on encoder and decoder of the system. When the noise present in the channel then decoder does not know the information of encoder. Due to that information is decentralized. This problem is solved by using Markov decision theory [2]. There are four types of RT communication between encoder and decoder[3][4]. These are  When encoder and decoder connected over noiseless channel (One direction).  When encoder and decoder connected over noisy channel (One direction).  When encoder and decoder connected over noiseless feedback channel.  When encoder and decoder connected over noisy feedback channel. The block diagram for these types are shown in Fig. 1, Fig.2, Fig. 3 and in Fig. 4. Figure 1: One Way communication over noiseless channel Figure 2: One Way communication over noisy channel Figure 3: RT communication with noiseless feedback II. PROBLEM DEFINITION Source Encoder Decoder Source Encoder Decoder Forward channel                      =  Source Encoder Decoder Forward channel              Research Article