Description and performance of a digital mobile satellite terminal

A major goal of the Mobile Satellite Experiment (MSAT-X) program at the Jet Propulsion Lab (JPL) is the development of an advanced digital terminal for use in land mobile satellite communication. The terminal has been developed to minimize the risk of applying advanced technologies to future commercial mobile satellite systems (MSS). Testing with existing L band satellites was performed in fixed, land mobile and aeronautical mobile environments. JPL's development and tests of its mobile terminal have demonstrated the viability of narrowband digital voice communications in a land mobile environment through geostationary satellites. This paper provides a consolidated description of the terminal architecture and the performance of its individual elements

An additional study and implementation of tone calibrated technique of modulation

The Tone Calibrated Technique (TCT) was shown to be theoretically free from an error floor, and is only limited, in practice, by implementation constraints. The concept of the TCT transmission scheme along with a baseband implementation of a suitable demodulator is introduced. Two techniques for the generation of the TCT signal are considered: a Manchester source encoding scheme (MTCT) and a subcarrier based technique (STCT). The results are summarized for the TCT link computer simulation. The hardware implementation of the MTCT system is addressed and the digital signal processing design considerations involved in satisfying the modulator/demodulator requirements are outlined. The program findings are discussed and future direction are suggested based on conclusions made regarding the suitability of the TCT system for the transmission channel presently under consideration

Understanding the Yoder Provision: Analyzing the Impact of Amendments to Dodd-Frank\u27s Swaps Push-Out Provision

Introduction: On December 16, 2014, Congress enacted the Consolidated and Further Continuing Appropriations Act, 2015 (Act) to fund the federal government through the 2015 fiscal year and forestall an imminent government shutdown.1 However, the content of this legislation was not limited exclusively to the allocation of funds; the Act controversially amended several provisions of the Dodd-Frank Wall Street Reform and Consumer Protection Act (Dodd-Frank).2 In a section now known as the “Yoder provision,”3 the Act amended section 716 of Dodd-Frank, which originally required certain financial institutions to “push-out” certain swap transactions to outside institutions that were not covered by federal insurance or surety programs.4 This Article discusses the implementation and impact of the Yoder provision on derivative finance and analyzes whether the provision creates an excessive fiscal liability for taxpayers. Part II of this Article discusses the initial implementation of Dodd-Frank’s swaps “push-out” provision and analyze its importance in preventing government subsidization of losses that ensue from private financial transactions. Part III further examines the Act, specifically the Yoder provision, and explains the application of the Act’s amendments to section 716 of Dodd-Frank. Part IV argues that the Act’s amendments to Dodd-Frank expose American taxpayers to significant financial liability by allowing covered depository institutions (CDIs) to participate in a larger variety of swaps transactions

An aeronautical mobile satellite experiment

The various activities and findings of a NASA/FAA/COMSAT/INMARSAT collaborative aeronautical mobile satellite experiment are detailed. The primary objective of the experiment was to demonstrate and evaluate an advanced digital mobile satellite terminal developed at the Jet Propulsion Laboratory under the NASA Mobile Satellite Program. The experiment was a significant milestone for NASA/JPL, since it was the first test of the mobile terminal in a true mobile satellite environment. The results were also of interest to the general mobile satellite community because of the advanced nature of the technologies employed in the terminal

Pengaruh Pengungkapan Corporate Social Reponsibility Terhadap Nilai Perusahaan Sub Sektor Grosir

This research was done in order to know the influence of Corporate Social Responsibility (CSR) on the firm value in wholesale sector. CSR was measured by using Global Reporting Initiative (GRI) Index 3.1 and firm value was measured by using TobinsQ. There were 3 control variables in this research, which were firm size, market share, and debt to equity ratio. Sample used in this research was taken from 78 companies years in the wholesale sector during 2009-2013.The result showed that CSR and debt to equity ratio had no significant influence on the firm value. While firm size had negative influence on the firm value and market share had significant influence on the firm value

Combined trellis coding and feedforward processing for MSS applications

The idea of using a multiple (more than two) symbol observation interval to improve error probability performance is applied to differential detection of trellis coded MPSK over a mobile satellite (fading) channel. Results are obtained via computer simulation. It is shown that only a slight increase (e.g., one symbol) in the length of the observation interval will provide a significant improvement in bit error probability performance both in AWGN and fading environments