Raja Periyasamy and Dananjayan Perumal
Cooperative MIMO, Coalition Game, Space Time Block Code, WSN
The nodes of Wireless sensor networks (WSNs) are limited in power resources. In order to promise the WSN survivability and increase the network lifetime in such special-purpose environments, various energy-efficient schemes have been proposed. Network lifetime is limited due to the radio irregularities and fading effects in wireless channel. The cooperative multi-input and multioutput (MIMO) scheme is utilised to reduce the fading effects in wireless channel. Space-Time Block Codes are designed to achieve maximum diversity for a given number of transmit and receive antennas. In radio fading channel, STBC require less transmission energy than single-input single-output (SISO) technique for the same Bit Error Rate and can be employed practically in WSNs. Hence this paper proposes a coalition game formation to select the cooperative nodes for enabling packet transmission using cooperative MIMO. The proposed game enables higher energy savings by allowing nodes to transmit and receive information jointly. The performance of the cooperative MIMO utilizing coalition game is evaluated in terms of energy consumption and packet delay.
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