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TCM Without Constellation Expansion Penalty
Kaminsky, Edit J.,Ayo, James The Korea Institute of Information and Commucation 2002 Journal of communications and networks Vol.4 No.2
We present a family of constant-amplitude constellations of even dimensions 8 and above. These constellations allow trellis coded modulation to be implemented without the usual penalty paid for constellation expansion. The new constellations are generated by concatenating either n QPSK points or n QPSK points rotated by 45 degrees, for any n $\geq$ 4. Our constellations double the number of points available for transmission without decreasing the distance between points and without increasing the average or peak energies, introducing asymmetry, or increasing the modulation level. Effective gains of 2.65 dB with minimum complexity through 6.42 dB with moderate complexity are demonstrated using the 8D constellation.
Assessing Financial Vulnerability in Emerging Economies: A Summary of Empirical Results
Morris Goldstein,Graciela L. Kaminsky,Carmen M. Reinhart 대외경제정책연구원 2000 East Asian Economic Review Vol.4 No.2
This paper aims to identify key empirical regularities in the run-up to banking and currency crises that would enable officials and private market participants to recognize vulnerability to financial crises at an earlier stage. This, in turn, should make it easier to motivate the corrective policy actions that would prevent such crises from actually taking place. Interest in identifying early warning indicators of financial crises has soared of late, stoked primarily by two factors. First, there is increasing recognition that banking and currency crises can be extremely costly to the countries in which they originate; in addition, these crises often spillover via a variety of channels to increase the vulnerability of other countries to financial crisis. The second reason for the increased interest in early warning indicators of financial crises is that there is accumulating evidence that two of the most closely watched market indicators of default and currency risks-namely, interest rate spreads and changes in credit ratings- frequently do not provide much advance warning of currency and banking crises. The other reason why market prices may not signal impending crises is that there are often widely and strongly-held expectations of a bail-out of a troubled borrower by the official sector ?be it national or international. Dooley has stressed this point in several papers. If interest rate spreads and sovereign credit ratings only give advance warning of financial crises once in a while, increased interest attaches to the question of whether there are other early-warning indicators that would do a better job, and if so, what are they? This is one of the key questions we address in this paper.
Narasinga Rao Palepu,Werner Kaminsky,Mohan Rao Kollipara 대한화학회 2017 Bulletin of the Korean Chemical Society Vol.38 No.1
A series of Cp*Rh and Cp*Ir complexes of picolinic hydrazine ligand are synthesized and characterized. Picolinic hydrazine has yielded only dinuclear complexes in the case of rhodium metal whereas both mono and dinuclear complexes with iridium metal. Iridium complexes are formed as quaternary salts by the migration of the N–H proton onto the adjacent amine group of the hydrazine after binding to the metal. Picolinic hydrazine acts as nitrogen and oxygen donor ligand in the form of bi and tetradentate bonding modes.