Description: Analyze the performance of cooperative networks taking the path-loss as a parameter for selecting the relays. Platform: |
Size: 1024 |
Author:imran |
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Description: The channel is modeled by adding the Gaussian noise and Rayleigh Fading. Different combining methods and relaying protocols are studied and compared in this project. We analyzed performance characterizations in terms of The Bit Error Rate and the Throughput. The relaying protocols considered are Amplify & Forward and Detect & forward out of which the Amplify and Forward showed better performance. Among the combining schemes, the Maximal Ratio Combining scheme showed better Bit Error Rate and Throughput curves. The network was also extended to a four node communication system with two relays which act as the distributed antennas. Thus using the distributed antennas we can provide the space diversity without need for physical arrays.
Index Terms: Cooperative Diversity, Fading channels, combining techniques,
transmission protocols, Relay channel, Bit error rate, Throughput, Amplify and forward, Detect and Forward.
-The channel is modeled by adding the Gaussian noise and Rayleigh Fading. Different combining methods and relaying protocols are studied and compared in this project. We analyzed performance characterizations in terms of The Bit Error Rate and the Throughput. The relaying protocols considered are Amplify & Forward and Detect & forward out of which the Amplify and Forward showed better performance. Among the combining schemes, the Maximal Ratio Combining scheme showed better Bit Error Rate and Throughput curves. The network was also extended to a four node communication system with two relays which act as the distributed antennas. Thus using the distributed antennas we can provide the space diversity without need for physical arrays.
Index Terms: Cooperative Diversity, Fading channels, combining techniques,
transmission protocols, Relay channel, Bit error rate, Throughput, Amplify and forward, Detect and Forward.
Platform: |
Size: 27648 |
Author:nani |
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Description: The basic idea behind cooperative communications is to establish reliable communication between the source and destination with the help of intermediate nodes, which help or aid communication between the source and destination. Besides the transmitter and the receiver as in a normal communication system, the intermediate nodes, called the relays, cooperatively communicate with each other to transmit the information. Platform: |
Size: 327680 |
Author:blue12 |
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Description: In this paper, we first propose an optimum relay ordering algorithm for the multi-branch multi-hop cooperative diversity networks. This optimum algorithm has a high complexity that makes it hard to implement. Therefore, a suboptimum relay ordering algorithm, which considerably reduces the complexity, is then developed. Furthermore, for a cooperative network with two relays, we analytically evaluate the performance of the suboptimum algorithm by using an approximate end-toend signal-to-noise ratio expression. Specifically, an approximate probability of wrong selection and an approximate expression of the symbol error rate are derived. The analysis and the numerical results demonstrate that the suboptimum algorithm performs very well as the optimum one at a much lower complexity. Platform: |
Size: 229376 |
Author:karim |
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Description: Wireless communication systems are traditionally conceptualized such that users individually commu-
nicate with the associated base station and vice versa. Cooperation is referred to as any architecture
that deviates from this traditional approach, that is where a user’s communication link is enhanced in
a supportive way by relays or in a cooperative way by other users. Due to the many available degrees
of freedom of such systems, that is the many ways in which supportive relays and cooperative users
can be deployed, an enormous amount of different architectures exist. Some canonical architectures
are briefl y introduced below, after having discussed the wireless channel they experience and the gains
one can expect from such deployments. Platform: |
Size: 4853760 |
Author:mohamed |
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Search - cooperative with relays