http://csi.usc.edu/~dimakis/CommNetS/ 2013-05-25T12:21:12-07:00 http://csi.usc.edu/~dimakis/CommNetS/ http://csi.usc.edu/~dimakis/CommNetS/lib/images/favicon.ico text/html 2013-04-22T23:26:50-07:00 Dileep Kalathil http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=channel_coding_methods_for_green_data_storage-_innovations_beyond_the_hamming_metric&rev=1366698410&do=diff Abstract: Recent surge in large-scale data storage systems has created an immediate need to develop new coding methodologies attuned to the physical properties of the emerging non-volatile memory technologies. We will first review basic physical models and demonstrate why the existing channel coding methods are becoming increasing inadequate for such channels. We will then in detail discuss several examples of algebraic channel coding approaches for non-volatile memories, focusing on improved da… text/html 2013-04-22T23:26:16-07:00 Dileep Kalathil http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=start&rev=1366698376&do=diff The seminar is open to anyone interested in communications, networking and signal processing. The regular seminar time is Wednesdays, 2:00-3:00PM in EEB248. Google Map for exact location (In the 2nd floor of the Hughes Aircraft Electrical Engineering Building (EEB) on the main USC campus.) If you would like to give a talk at the seminar please contact Alex Dimakis or Rahul Jain. text/html 2013-04-12T13:17:50-07:00 Dileep Kalathil http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=ambiguity_in_risk_preferences_in_optimization_and_control&rev=1365797870&do=diff Abstract: We discuss the problem of ambiguity in risk preferences and its relation to stochastic dominance. This presentation emphasizes the increasing concave stochastic order due to its close connection with risk aversion. We begin the talk by reviewing earlier work on stochastic dominance constrained optimization. Then, we present new material on multivariate stochastic dominance constrained optimization. Multivariate stochastic dominance is relevant when a decision maker faces multiple j… text/html 2013-04-08T10:18:40-07:00 Dileep Kalathil http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=networked_information_processing-_new_compression_processing_and_control_paradigms_for_networks:start&rev=1365441520&do=diff Networked Information Processing: New Compression, Processing and Control Paradigms for Networks Resource (energy, bandwidth, delay, storage) constraints are the key factors in designing the current and emerging communications, networking and signal processing applications. Such applications strongly motivate foregoing the convenience of digital communication and revisiting the potential benefits, and even necessity of analog communication, albeit in the modern context of source-channel coding… text/html 2013-03-29T14:44:39-07:00 Dileep Kalathil http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=cognitive_access_policies_under_a_primary_arq_process_via_chain_decoding&rev=1364593479&do=diff Abstract: We introduce a novel technique for access by a cognitive Secondary User (SU) to a spectrum with an incumbent Primary User (PU), which uses Type-I Hybrid ARQ. The technique allows the SU to perform selective retransmissions of previously corrupted SU data packets. The temporal redundancy introduced by the primary ARQ protocol and by the selective SU retransmission process can be exploited by the SU receiver to perform Interference Cancellation (IC) over the entire interference pattern, … text/html 2013-03-28T10:19:23-07:00 Dileep Kalathil http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=networked_information_processing:new_compression_processing_and_control_paradigms_for_networks&rev=1364491163&do=diff Networked Information Processing: New Compression, Processing and Control Paradigms for Networks: Abstract: Resource (energy, bandwidth, delay, storage) constraints are the key factors in designing the current and emerging communications, networking and signal processing applications. Such applications strongly motivate foregoing the convenience of digital communication and revisiting the potential benefits, and even necessity of analog communication, albeit in the modern context of source-cha… text/html 2013-03-28T01:33:15-07:00 Dileep Kalathil http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=pricing_of_fluctuations_in_electricity_markets&rev=1364459595&do=diff In the near future, deep penetration of volatile renewable electricity generation is expected to exacerbate the variability of demand on conventional (thermal) generating units. We address this issue by explicitly modeling the ancillary cost associated with demand variability. We argue that charging consumers time-varying prices equal to the suppliers' instantaneous marginal cost may not achieve social optimality. We propose a dynamic pricing mechanism that explicitly encourages consumers t… text/html 2013-03-24T21:07:25-07:00 Rahul Jain http://csi.usc.edu/~dimakis/CommNetS/doku.php?id=smarter_markets_for_a_smarter_grid_-_the_why_and_how&rev=1364184445&do=diff Smarter Markets for a Smarter Grid: The Why and How As the world moves towards a greater fraction of renewable energy in the total energy mix, a smarter grid and electricity infrastructure has become imperative. This introduces many new problems at various levels. For one, renewable energy generators can't participate in the future electricity markets without exposing themselves to too much risk. Thus, new market mechanisms and architectures are going to be needed. There would be entities calle…