Description

Multiple Node communication system is proposed which are located in the half-duplex multi-antenna relay station (RS). The multi-user communication channel, in which multiple users exchange information. Based on the multi way approach, decode the message of each node from all other nodes. The number of nodes decides the number of communication phases. For a single phase, message of the all nodes transmits simultaneously to the RS, next phase the RS transmits to all nodes y using transceive beamforming. In this process three linear beamformers are used such as Zero Forcing (ZF), Minimum Mean Square Error (MMSE) and Maximisation of Signal to Noise Ratio (MSNR). Performance are evaluated with achievable sum rate for both asymmetric traffic and symmetric traffic. In asymmetric traffic all nodes are communicated with minimum traffic rate where as in symmetric traffic all nodes are communicated with same traffic rate. Those mentioned beamformers are low computational complexity transceive beamforming. It is a general signal processing technique used to control the directionality of the reception or transmission of a signal on a transducer array. In multi-way communication, if all N nodes are half-duplex and there are direct links between them, the required number of communication phases in order for each node to obtain the information from all other nodes is N.