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Yayın Achievable rates for two user cooperative OFDMA(IEEE, 2010) Bakım, İsmail Sezi; Kaya, OnurWe propose two encoding strategies for a two user cooperative Orthogonal Frequency Division Multiple Access (OFDMA) system, based on block Markov superposition encoding. We obtain the expressions for the resulting achievable rate regions for both encoding strategies, and evaluate them through simulations. We show that, by allowing for re-partitioning and re-encoding of the cooperative messages across subchannels, it is possible to better exploit the diversity created by OFDMA, and higher rates can be achieved.Yayın Breaking free from the linear: In search for Innoveaders(Elsevier Science Inc, 2015-07-03) Yüksel, Ahmet HakanThe characteristics of the global business environment in which the organizations are expected to sense-and-respond to the target customers’ preferences constantly on the move have drastically changed for the last four decades. The impact of repeated and prolonged attempts to design the whole (system) has been neutralized since it is barely enough to predict the outcomes of the upward-causality from the knowledge of the parts. Innovativeness, under these circumstances, cannot be reified as something done to organizations via deliberate managerial interventions. Traditional leadership approaches fail to grasp the very insight regarding the creation of ingenious organizations in which emergence is giving rise to innovation. This conceptual paper intends to delve into the relationship between innovation-driven organizations and the right context of leadership to be instilled through incorporation of complexity science into management and coins the term innoveadership to identify the characteristics of such context.Yayın Leaders as enablers creating ecologies of innovation within organizations(Sawyer Business School, 2013-06) Yüksel, Ahmet HakanOrganizations are expected to devise adroit actions in the face of prevailing complexity in business environment. Under the circumstances of intensive competition in global markets, dealing with the concept of innovation entails to embrace a more profound coverage than generally ascribed. Innovation is about building capabilities that will eventually be materialized into novel ways of doing things. The very essence of innovation lies in its ability to carry a work process to a superior level of value generation. Therefore, leaders (leadership) are supposed to be reengineered as enablers who function as catalyst for the transformation of organizations into ecologies of innovation where building capabilities and creation of knowledge are continuous endeavors. This conceptual paper aims to tap into the heart of this matter and deal with the relationship between becoming innovative and the appropriate context of leadership that should be instilled in contemporary organizations.
