Spatial modulation and energy Harvesting in cooperative Communications an outage Perspective

Abstract

Spatial Modulation (SM) is a new paradigm for 5G and beyond 5G newlinewireless communication systems which provides high spectral efficiency and newlineenergy efficiency. SM is based on multiple antenna system in which the newlineincoming serial data bits are converted into parallel data bits by serial to parallel newlineconverter and clustered in to two groups. The first group of bits is transmitted by newlineselecting one active antenna from multiple antennas at the transmitter side. The newlinesecond group of bits is transmitted in conventional modulation scheme. newlineCooperative relay communications can enhance the communication reliability newlinebetween source and destination as well as it extends the range between them. newlineEnergy consumption of relay node is the major concern in unidirectional or newlinebidirectional cooperative communications systems. Energy efficiency of the newlinerelay node can be improved by employing SM. As only one antenna is active in newlineSM at the time of transmission and all antennas are active at the time of newlinereception in SM, a new research direction is emerged in the field of SM based newlineSimultaneous Wireless Information and Power Transfer (SWIPT). Energy newlineHarvesting (EH) at the SM relay node can reduce the energy burden in newlinetransmission of information. Energy at the relay node is harvested by using newlineeither Time Switching Relaying (TSR) Protocol or Power Splitting Relaying newlineProtocol (PSR). In this thesis, SM is employed in all nodes of bidirectional relay newlinenetwork. The energy consumption burden at the relay node is reduced by placing newlinea power splitter which co-ordinates the EH and information processing at the newlinerelay node. The end to end outage probability expression and throughput of the newlineSM based bidirectional relay network is derived in terms of power splitting newlinefactor at relay node. newlineCognitive Radio (CR) technique is an effective approach to improve newlinethe utilization of spectrum resources. CR users also called as secondary users can newlineshare the licensed users (primary users) spectrum in either in overlay method or newlineunderlay method. newline