Browsing by Author "Bejarano, Oscar"

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    Method and system for reducing sounding overhead in wireless communication
    (2018-08-14) Bejarano, Oscar; Quadri, Sadia; Knightly, Edward W.; Gurewitz, Omer; Magistretti, Eugenio; Rice University; United States Patent and Trademark Office
    A method for transmitting packets. The method includes making a first determination, using a first relevant sample set for a first client device, that the first client device does not need to be sounded and making a second determination, using a second relevant sample set for the second client device, that a second client device needs to be sounded. The method further includes, based on the first and second determination, performing a sounding operation for the second client device to obtain channel state information for the second client device and after performing the sounding operation for the second client device: wirelessly transmitting at least one packet to the first client device using historical channel state information for the first client device, and wirelessly transmitting at least one packet to the second client device using the channel state information.
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    The Telecommunications Sector in Mexico: Present and Future in the Context of the 2014 Reform
    (2014) Bejarano, Oscar; James A. Baker III Institute for Public Policy
    The constitutional reform of telecommunications approved in 2013 offered a historic opportunity to fix and restructure Mexico’s anemic telecommunications sector. While the original reform initiative seemed to address key problems at the root of the dysfunctional system, the secondary laws have been widely criticized by public policy experts and human rights advocates. Beyond issues regarding freedom of speech, the controversy around this reform exposed other equally unacceptable realities of the new telecom sector in Mexico. Concerns focus on whether the new laws and policies will have a strong positive social impact or whether they are designed for the benefit of a minority of investors and will ultimately detract from the public welfare. This paper has three major parts. First, it compares the telecommunications sector in Mexico to that of other Organisation for Economic Co-operation and Development (OECD) and Latin American countries. Second, it discusses how telecom reform addresses some of the root causes of the sector’s inefficiency, but fails in delivering the solutions outlined in the original reform objectives. Finally, it concludes that the execution of the proposed changes will be crucial for the ultimate success or failure of this constitutional reform.