Browsing by Subject "Passing"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Open Access Analysis of Coded Slotted ALOHA with energy harvesting nodes for Perfect and Imperfect Packet Recovery Scenarios(Institute of Electrical and Electronics Engineers, 2023-03-06) Haghighat, Javad; Duman, Tolga MeteWe analyze the performance of Coded Slotted ALOHA (CSA) protocols in scenarios where users are equipped with limited batteries that are recharged through Energy Harvesting (EH). First, we assume a Perfect Packet Recovery Scenario (PPRS) for which the received packets are decoded with no errors when there is no interference. We introduce Battery Outage Probability (BOP) as an extra performance metric; and, we derive the optimal EH-CSA transmission policies, which offer the maximum attainable traffic load while maintaining an asymptotically negligible Packet Loss Ratio (PLR), under specific rate and BOP constraints. We extend our study to Imperfect Packet Recovery Scenario (IPRS) where impairments at the physical layer, including channel estimation and channel decoding errors, will distort messages being passed through the iterative Successive Interference Cancellation (SIC) process. The distorted messages being passed through the SIC process potentially lead to error propagation. In order to track the error propagation process, we define the concept of Accumulated Noise plus Interference Power (ANIP), and analytically track the evolution of its probability distribution. We employ our results to evaluate the bit error rates for different transmission policies for the case of IPRS. We also demonstrate the advantages of the optimal transmission policies through numerical examples for both PPRS and IPRS. Our results show that the optimal EH-CSA policies outperform the policies optimized for standard CSA without EH considerations, and the schemes that are optimal for PPRS are not necessarily optimal for the IPRS case. Furthermore, the EH-CSA optimal policies strictly outperform standard CRDSA when the system is required to support higher traffic loads.Item Open Access Passing ethnic identities : a case study on comedy in Turkish cinema(Bilkent University, 2014) Deliormanlı, EceThis study analyzes minority representation strategies in Turkish cinema, particularly Kurds in mainstream comedies. In the study passing is taken into account as a representation strategy that was developed and sustained by the dominant ideology in order to maintain ethnic inequalities in a society. Study examines how minority representations are created by majority through different discourses and how Kurdishness contextually either exaggerated or lessened by passing strategies of the mainstream Turkish cinema to privilege one ethnicity, Turkishness, over the other(s).