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TRANSCEIVER DESIGN FOR HYBRID ONE WAY AND TWO WAY RELAY NETWORKS
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TRANSCEIVER DESIGN FOR HYBRID ONE-WAY AND TWO-WAY RELAY NETWORKS

Category :


Sub Category : RELAY


Project Code : ITDSP05


Project Abstract

Due to a variety of service types required by different users, unidirectional and bidirectional data transmissions may coexist in a relay network. In this letter, we consider such a hybrid one-way and two-way relay network, where both unidirectional and bidirectional data transmissions are delivered simultaneously between different user pairs via a common multi antenna relay node. We first develop a relaying scheme that provides inter-pair interference free transmissions for all users. A near optimal power allocation method at the relay is then proposed to maximize the system sum rate. Numerical results show that our relaying scheme significantly outperforms the traditional zero-forcing based scheme.

EXISTING SYSTEM

PROPOSED SYSTEM

EXISTING CONCEPT:

·         For relay networks with multiple source-destination pairs, multiple antennas are equipped at the relay to combat interference among different users. When the aforementioned schemes are applied in two-way relay networks.

·         To improve the spectral efficiency, digital or analogue network coding has been incorporated such that a two-way relay transmission could be realized in three or two phases.

PROPOSED CONCEPT:

·         The power allocation problem for throughput maximization of a cellular relay network is formulated into a convex problem.

·         We consider a hybrid relay network where both one-way and two-way data transmissions are accomplished simultaneously via a common relay. We first propose an inter-pair interference free transmission scheme for the network and then discuss the power allocation at the relay to maximize the system sum rate.

TECHNIQUES:

·         Unidirectional and bidirectional data transmissions.

·         Relay network.

TECHNIQUES:

·         Power allocation optimization.

          Relay pre-coding matrix.

TECHNIQUE DEFINITION:

·         A relay network is a broad class of network topology commonly used in wireless networks, where the source and destination are interconnected by means of some nodes.

TECHNIQUE DEFINITION:

·         Maximize the system sum rate under power constraint at the relay.

·         A relaying scheme for the hybrid relay network to guarantee inter-pair interference free transmissions.

DRAWBACKS:

·         Interference is high.

·         Relay node is used to data transfer the network.

ADVANTAGES:

       Maximize the sum rate.

         Throughput gain.

 


 
 
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